An air mixture containing 20% Ozone (Os) is fed to a plug flow reactor (PFR), with a total molar flow rate of 3 mol/min. Ozone in the air mixture is degraded to oxygen in the reactor. The temperature and the pressure in the reactor are 366 and 1.5 atm, respectively. The degradation reaction is an elementary reaction and the reaction rate constant is 3 L/(mol-min). 20₁→ 30₂ a) Calculate the concentration of each component, and the volumetric flow rate in the feed. b) Derive the reaction rate law. c) Construct the stoichiometric table. d) Calculate the reactor volume required for 50% conversion of ozone. e) Calculate the concentration of each component, and volumetric flow rate at the exit of the reactor.

The standard enthalpy of combustion of propene can be determined using Hess's Law by subtracting the enthalpy of hydrogenation of propene from the enthalpy of combustion of propene, yielding -2096 kJ/mol.

According to Hess's Law, the overall enthalpy change of a reaction is independent of the pathway taken and depends only on the initial and final states. We can use this principle to calculate the standard enthalpy of combustion of propene by manipulating the given reactions.

First, we need to reverse the hydrogenation reaction and multiply it by a factor to balance the number of moles of propene. This gives us:

CH3CH2CH3(g) → 3CH2=CHCH3(g) + 3H2(g) ΔH = +124 kJ/mol

Next, we need to multiply the combustion reaction by a factor to balance the number of moles of propene and reverse it:

3CH3CH2CH3(g) + 15O2(g) → 9CO2(g) + 12H2O(g) ΔH = +2220 kJ/mol

Finally, we need to multiply the water formation reaction by a factor and reverse it:

6H2(g) + 3O2(g) → 6H2O(g) ΔH = +858 kJ/mol

Now, we can add up the three manipulated reactions to obtain the desired reaction, which is the combustion of propene:

3CH2=CHCH3(g) + 15O2(g) → 9CO2(g) + 12H2O(g) ΔH = ?

By summing up the enthalpy changes of the three reactions, we get:

ΔH = (+124 kJ/mol) + (+2220 kJ/mol) + (-858 kJ/mol) = +1486 kJ/mol

However, this value corresponds to the enthalpy change for the combustion of three moles of propene. To find the enthalpy change for one mole of propene, we divide the value by three:

ΔH = +1486 kJ/mol ÷ 3 = +495.33 kJ/mol

Therefore, the standard enthalpy of combustion of propene is approximately -495.33 kJ/mol.

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The Henry's law constant for arsine in water based on this experiment is 4.27 atm.

Henry's law is a gas law which explains that the amount of a gas which is dissolved in a liquid is directly proportional to the pressure of the gas above the liquid, provided the temperature is constant. Henry's law may be expressed in different ways and with different concentration units, resulting in different values for the Henry's law constants.

One algebraic statement of the law is: Pgas KHXgas where k is the Henry's law constant in units of pressure, usually atm.

At 25°C, some water is added to a sample of gaseous arsine (AsH3) at 3.68 atm pressure in a closed vessel and the vessel is shaken until as much arsine as possible dissolves. Then 0.962 kg of the solution is removed and boiled to expel the arsine, yielding a volume of 0.813 L of AsH3(g) at 0°C and 1.00 atm.

The given parameters are:Pgas = 3.68 atm; x = ?; m = 0.962 kg; Vg = ?; Pg = 1 atm; T = 273 K; VH2O = 0.962 kg / (18.01528 g/mol) = 53.43 mol.The gas moles at 25°C are calculated from: PV = nRT where V is the volume of the gas in liters, P is the pressure of the gas in atm, n is the number of moles of gas, R is the gas constant (0.082 L·atm/K·mol), and T is the temperature in kelvin. Using these values, the number of moles of arsine gas (AsH3) in the sample is:Pgas = nRT/Vn = (Pgas x V) / RTn = (3.68 atm x VH2O) / (0.082 L·atm/K·mol x 298 K) = 14.18 mol of AsH3 gas in the sample.

Using the mass of the solution, the number of moles of AsH3 in the solution can be determined:mass fraction AsH3 in solution = mass AsH3 / mass of solution; mass AsH3 = mass of solution × mass fraction AsH3 in solution = 0.962 kg × xmass fraction AsH3 in solution = (mass AsH3 / mass of solution) = 53.43 mol AsH3 / (53.43 mol + n(H2O) ) = x/1000where n(H2O) is the number of moles of water and x is the mole fraction of AsH3 in the solution.

Hence,53.43 / (53.43 + n(H2O)) = x / 1000, which yields x = 62.75 mole percent

The mole fraction of AsH3 in solution is:x = 0.6275 mol AsH3 / (0.3725 mol H2O + 0.6275 mol AsH3) = 0.6275 / 1.000 = 0.6275

The partial pressure of AsH3 is given by:PH2O = 1 atm (since AsH3 is boiled and collected at 1 atm)PAsH3 = Ptot - PH2O

where Ptot = 3.68 atm is the total pressure of the system.

Therefore,PAsH3 = 3.68 atm - 1 atm = 2.68 atmNow, using the Henry's law equation: Pgas = K HXgas, we can solve for K (Henry's law constant),K = Pgas / XH2OK = 2.68 atm / 0.6275 = 4.27 atm (rounded to two decimal places).

Therefore, the Henry's law constant for arsine in water based on this experiment is 4.27 atm.

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To prepare 2-methylhexan-3-ol from propan-2-ol, you can follow the following steps:

Step 1: Oxidation of propan-2-ol to propanone (acetone) using an oxidizing agent such as potassium dichromate (K2Cr2O7) and sulfuric acid (H2SO4). This reaction converts propan-2-ol into propanone.

Step 2: Condensation of propanone with formaldehyde (HCHO) in the presence of an acid catalyst, such as sulfuric acid (H2SO4), to form a hemiacetal intermediate.

Step 3: Reduction of the hemiacetal intermediate using a reducing agent, such as sodium borohydride (NaBH4), to yield the desired 2-methylhexan-3-ol.

Step 1: Oxidation of propan-2-ol to propanone (acetone)

Propan-2-ol (CH3CH(OH)CH3) can be oxidized to propanone (CH3COCH3) using an oxidizing agent like potassium dichromate (K2Cr2O7) and sulfuric acid (H2SO4).

The reaction is typically carried out under reflux conditions.

The balanced chemical equation for this reaction is:

CH3CH(OH)CH3 + [O] -> CH3COCH3 + H2O

Step 2: Rearrangement of propanone to 2-methylhexan-3-one

Propanone (CH3COCH3) can undergo a rearrangement reaction known as the haloform reaction in the presence of a halogen, such as chlorine (Cl2), and a base, like sodium hydroxide (NaOH).

The reaction proceeds through the formation of an enolate intermediate.

The balanced chemical equation for this reaction is:

CH3COCH3 + 3Cl2 + 4NaOH -> CH3C(O)CHCl2 + 3NaCl + 3H2O

Step 3: Reduction of 2-methylhexan-3-one to 2-methylhexan-3-ol

2-Methylhexan-3-one (CH3C(O)CHCl2) can be reduced to 2-methylhexan-3-ol (CH3CH2CH(CH3)CH(CH3)CH2OH) using a reducing agent like lithium aluminum hydride (LiAlH4) in an appropriate solvent such as diethyl ether (Et2O).

The balanced chemical equation for this reaction is:

CH3C(O)CHCl2 + 4LiAlH4 -> CH3CH2CH(CH3)CH(CH3)CH2OH + 4LiCl + 4Al(OH)3

By following these steps, you can convert propan-2-ol into 2-methylhexan-3-ol. The oxidation of propan-2-ol produces propanone, which is then condensed with formaldehyde to form a hemiacetal intermediate. Finally, the reduction of the hemiacetal intermediate yields the desired product, 2-methylhexan-3-ol. It is important to note that the reaction conditions and specific reagents may vary depending on the experimental setup and desired yield.

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The air-fuel ratio (A/F) is 0.54 kg/kgmol and The combustion equation for propane is C3H8 + 5O2 + 20.8N2 → 3CO2 + 4H2O + 20.8N2.

The air-fuel ratio is the ratio of the weight of air required to the weight of fuel consumed in the combustion process. Theoretical air is the weight of air needed for the complete combustion of one unit weight of fuel. For complete combustion, a fuel requires theoretical air. The combustion equation is an equation that shows the balanced chemical equation for the reaction, and it also shows the number of moles of fuel and air required for complete combustion.

Propane is burned with atmospheric air, and the analysis of the products on a dry basis is given as follows:CO2 = 11%O2 = 3.4%CO = 2.8%N2 = 82.8%

Firstly, we need to find out the percentage of the actual air in the combustion products.Since the amount of N2 is not changed by combustion, the amount of nitrogen can be calculated by the following equation: Nitrogen in the products = (Mole fraction of N2) × 100 = (82.8/100) × 100 = 82.8%.

Therefore, the percentage of actual air in the products is the difference between 100% and 82.8%, which is 17.2%.Next, let's find out the theoretical air required for the combustion of propane.The balanced combustion equation for propane is: C3H8 + (5 O2 + 20.8 N2) → 3 CO2 + 4 H2O + 20.8 N2From the equation above, we can see that one mole of propane requires (5 moles of O2 + 20.8 moles of N2) of air.

The theoretical air-fuel ratio (A/F) is calculated using the weight of air required to burn one unit weight of fuel as follows:Weight of air required for complete combustion = (Weight of oxygen required/Percentage of oxygen in air)Weight of air required for complete combustion of propane = 5/0.21 (since air contains 21% oxygen by weight)= 23.81 kg/kgmol propane.The air-fuel ratio (A/F) = (Weight of air supplied/Weight of fuel consumed)

Therefore, A/F = 23.81/44 = 0.54 kg/kgmol.

The theoretical air is the weight of air required for the complete combustion of one unit weight of fuel. Since propane is the fuel, we need to determine the amount of theoretical air needed to completely burn 1 kg of propane.The theoretical air required to burn 1 kg of propane = 23.81 kg/kgmol × (1/44 kgmol/kg) = 0.542 kg/kgmol propane.

So, the combustion equation for propane is C3H8 + 5O2 + 20.8N2 → 3CO2 + 4H2O + 20.8N2.

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The final temperature of nitrogen, when compressed isentropically from 100 kPa and 27 °C to 1000 kPa, is approximately 132.15 K.

To determine the final temperature of nitrogen when compressed isentropically from 100 kPa and 27 °C to 1000 kPa, we can use the ideal gas equation and the isentropic process relationship.

The ideal gas equation is given as:

PV = mRT,

where P is the pressure, V is the volume, m is the mass, R is the specific gas constant, and T is the temperature.

For an isentropic process, we have the relationship:

P₁V₁^γ = P₂V₂^γ,

P₁ = 100 kPa

P₂ = 1000 kPa

T₁ = 27 °C

= 27 + 273.15

= 300.15 K

C₂ = 1.042

C = 0.745

We need to calculate T₂, the final temperature.

First, let's find the initial volume, V₁, using the ideal gas equation:

V₁ = (mRT₁) / P₁.

Next, let's rearrange the isentropic process relationship to solve for the final volume, V₂:

V₂ = V₁ * (P₁ / P₂)^(1/γ).

We can now enter the provided values into the equations and find the final temperature by solving.

Rearranging the ideal gas equation:

V₁ = (mRT₁) / P₁

V₁ = (m * R * 300.15 K) / (100 kPa)

V₁ = (m * R * 300.15) / (100000 Pa)

Rearranging the isentropic process relationship:

V₂ = V₁ * (P₁ / P₂)^(1/γ)

V₂ = [(m * R * 300.15) / (100000 Pa)] * [(100 kPa) / (1000 kPa)]^(1/γ)

V₂ = [(m * R * 300.15) / (100000 Pa)] * (0.1)^(1/γ)

Now, let's use the ideal gas equation again to find the final temperature, T₂:

P₂ * V₂ = m * R * T₂

(1000 kPa) * [(m * R * 300.15) / (100000 Pa)] * (0.1)^(1/γ) = m * R * T₂

(1000) * (m * R * 300.15) * (0.1)^(1/γ) = m * R * T₂

Canceling out the mass and R:

1000 * 300.15 * (0.1)^(1/γ) = T₂

Substituting the given value for γ:

1000 * 300.15 * (0.1)^(1/1.042) = T₂

Calculating the final temperature, T₂:

T₂ ≈ 132.15 K

The final temperature of nitrogen, when compressed isentropically from 100 kPa and 27 °C to 1000 kPa, is approximately 132.15 K.

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Answer : vapour pressure : 1251.5 mmHg

To calculate the Vapour pressure of water at 20 °C, we will use the Antoine Equation, which is as follows:

log P = A − (B / (T + C)), where P is the pressure (in mmHg) and T is the temperature (in Celsius).

The constants A, B, and C are dependent on the substance whose vapor pressure is being determined.

For water, they are as follows:

A = 8.07131

B = 1730.63

C = 233.426

First, let's convert the temperature from Celsius to Kelvin: T = 20 + 273 = 293 K

Now, we can plug in the values into the Antoine Equation :log P = 8.07131 - (1730.63 / (233.426 + 293))

log P = 4.88208P = antilog(4.88208)

P = 1251.5 mmHg

Therefore, the Vapour pressure of water at 20 °C is 1251.5 mmHg.

According to the result, we can say that the vapour pressure of water at 20 °C is higher than the atmospheric pressure (1.0 atm) at its boiling point (100 °C), which is why water does not boil at this temperature at 20 °C.

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The range of power required to achieve a sweep coagulation reaction in the rapid mixer is 2.46 kW to 4.74 kW.

Dynamic viscosity = 1.06 × 10⁻³

Pa.s and t = 1 s.

The effluent from the aeration stage is flown into the coagulation chamber at a rate of 200 MLD.  

Gradient velocity = 800 s⁻¹.

Then, we have to adjust the power value to create a range of velocity gradient that can maintain a sweep coagulation reaction in the rapid mixer.

Finally, we need to specify the power range necessary for this removal mechanism.

Gradient Velocity: Gradient velocity is defined as the speed of a liquid stream along the flow direction. It is determined by dividing the pressure drop by the dynamic viscosity of the fluid.

In this case, the dynamic viscosity of the fluid is given as 1.06 × 10⁻³ Pa.s.

Gradient velocity is calculated by the formula as follows:

Velocity gradient = ΔP / (η × L)

Where, ΔP = pressure drop

η = dynamic viscosity

L = length of the tube

In this case, the velocity gradient is 800 s⁻¹, and the dynamic viscosity is 1.06 × 10⁻³ Pa.s.Volume and Mixing Power: Volume flow rate (Q) = 200 MLD = 200 × 10⁶/86400 = 2314.81 m³/s

Power (P) = ηQ(ΔH/Δt)

Here, ΔH/Δt is the head loss through the coagulation chamber. As there is no mention of the head loss, we will consider it to be zero. Thus, the power is given as:

P = ηQ × 0P = 1.06 × 10⁻³ × 2314.81P = 2.46 kW

Range of Power Required for Sweep Coagulation Reaction: Sweep coagulation is a process in which coagulants are added to a solution to destabilize the suspended particles.

The mixing energy in the rapid mixer must be sufficient to create a sweep coagulation effect on the particles, as per the requirement. A power range is needed for this removal mechanism.

We can use the following equation to compute the mixing power required to achieve a sweep coagulation reaction:

P = (γ×G×η) / n

Here,G = Velocity gradient

η = dynamic viscosity

γ = 6.5 (Coefficient)

n = 1.5 for impeller operation and 1.2 for jet operation

For the given case,G = 800 s⁻¹η = 1.06 × 10⁻³ Pa.sn = 1.2 for jet operation

Substituting these values in the equation, we get:

P = (6.5 × 800 × 1.06 × 10^−3) / 1.2P = 4.74 kW

Therefore, the range of power required to achieve a sweep coagulation reaction in the rapid mixer is 2.46 kW to 4.74 kW.

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Mass spectrometry is a technique commonly used to distinguish light elements from heavy elements.

One technique commonly used to distinguish light elements from heavy elements is Mass Spectrometry. Mass spectrometry is a powerful analytical technique that measures the mass-to-charge ratio of ions. By subjecting a sample to ionization and then separating the ions based on their mass-to-charge ratio, mass spectrometry can provide information about the elemental composition of a sample.

In mass spectrometry, ions are accelerated through an electric field and then deflected by a magnetic field, causing them to follow different paths based on their mass-to-charge ratio. By detecting the ions at different positions or using a mass analyzer, the relative abundance of different isotopes or elements can be determined.

Since different elements have different masses, mass spectrometry can effectively distinguish light elements (e.g., hydrogen, carbon, nitrogen) from heavy elements (e.g., lead, uranium). This technique is widely used in various fields such as chemistry, geology, forensics, and environmental analysis for elemental identification and isotopic analysis.

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To estimate the cooling requirements for the fermentation process, we can use an energy balance equation.

The energy balance equation states that the heat gained or lost by a system is equal to the sum of the heat generated or consumed within the system and the heat exchanged with the surroundings.

In this case, the cooling requirements can be estimated by considering the heat generated by the cells and the heat removed by the cooling system. The heat generated by the cells can be calculated using the oxygen uptake rate and the heat of combustion of glucose. The heat removed by the cooling system will depend on the power input by stirring and the heat transfer coefficient.

Here are the steps to estimate the cooling requirements:

1. Calculate the heat generated by the cells:

  - Determine the average oxygen uptake rate (mmol L^(-1) min^(-1)) by taking the average of the given range (0.45 to 0.85 mmol L^(-1) min^(-1)).

  - Convert the oxygen uptake rate to moles per second (mol s^(-1)).

  - Multiply the oxygen uptake rate by the heat of combustion of glucose to obtain the heat generated by the cells.

2. Calculate the heat removed by the cooling system:

  - Convert the power input by stirring to joules per second (W).

  - Calculate the heat transfer rate using the heat transfer coefficient. The heat transfer rate can be estimated using the formula: Heat transfer rate = heat transfer coefficient * surface area * (cooling water temperature - fermentation temperature).

3. Determine the cooling requirements:

  - The cooling requirements will be the sum of the heat generated by the cells and the heat removed by the cooling system.

Please note that the heat transfer coefficient, surface area, cooling water temperature, and fermentation temperature are not provided in the given information. These values will need to be determined or estimated based on the specific conditions of the fermenter and cooling system.

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The molar concentration of hydrogen in the spherical tank is 40.2 mol/m³.

The molar concentration of hydrogen (species A) in a spherical tank made of steel (species B) can be calculated as follows:

Given data:

The diameter of the spherical tank is 100 mm.

The thickness of the tank is 2 mm.

The pressure of hydrogen in the tank is 10 bar.

The temperature of hydrogen in the tank is 27°C.

The density of steel is 7.86 g/cm³.

The molecular weight of hydrogen is 2 g/mol.

Formula: The molar concentration (n/V) of hydrogen is given by n/V = P/(RT)where,

P is the pressure of hydrogen in the tank

R is the gas constant

T is the temperature of hydrogen in the tank (in K)

V is the volume of the tank

Solution: Let us first calculate the volume of the tank.

The diameter of the spherical tank = 100 mm

So, the radius of the tank, r = diameter/2 = 100/2 = 50 mm = 0.05 m

The thickness of the tank = 2 mm

So, the inner radius of the tank, R1 = r - t = 0.05 - 0.002 = 0.048 m

The outer radius of the tank, R2 = r = 0.05 m

Now, the volume of the spherical tank, V = 4/3π(R2³ - R1³) = 4/3π(0.05³ - 0.048³) = 8.08×10⁻⁵ m³

The temperature of hydrogen in the tank = 27°C = 300 K

The pressure of hydrogen in the tank = 10 bar = 1×10⁶ Pa

The gas constant, R = 8.314 J/K·mol

The molecular weight of hydrogen, M = 2 g/mol = 0.002 kg/mol

Now, the molar concentration of hydrogen ,n/V = P/(RT)= (1×10⁶)/(8.314×300) = 40.2 mol/m³

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The balanced chemical equation for the combustion reaction of the gaseous hydrocarbon fuel (CxH2x+2) with air can be written as CxH2x+2 + (2x + 1)O2 + 3.76N2 -> xCO2 + (x + 1)H2O + 3.76(2x + 1)N2. The fuel is determined to be methane (CH4).

The balanced chemical equation for the combustion reaction of the gaseous hydrocarbon fuel (CxH2x+2) with air can be written as:

CxH2x+2 + (2x + 1)O2 + 3.76N2 -> xCO2 + (x + 1)H2O + 3.76(2x + 1)N2.

Given the volumetric analysis of the products of combustion, we can determine the value of x in the hydrocarbon fuel. The percentage of carbon dioxide (CO2) corresponds to the carbon atoms in the fuel, so 9.45% CO2 implies x = 1. The fuel is therefore methane (CH4).

To calculate the air-fuel ratio, we compare the moles of air to the moles of fuel in the balanced equation. From the equation, we have (2x + 1) moles of oxygen (O2) and 3.76(2x + 1) moles of nitrogen (N2) for every 1 mole of fuel. Substituting x = 1, we find that the air-fuel ratio is 17.2 kg of air per kg of fuel.

To determine the heat transfer rate and combustion efficiency on a lower heating value (LHV) basis, we need to calculate the molar enthalpies of the reactants and products. Using standard molar enthalpies of formation, we can calculate the change in molar enthalpy for the combustion reaction. The heat transfer rate can be obtained by multiplying the change in molar enthalpy by the mass flow rate of the fuel. The combustion efficiency on an LHV basis can be calculated by dividing the actual heat transfer rate by the ideal heat transfer rate.

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The IUPAC names for the given compounds are as follows:

3.1.1: 2,4-dimethyl-3-hexanol

3.1.2: 2,3-dihydroxybut-1-ene

To determine the IUPAC names of the given compounds, we need to follow the rules of the International Union of Pure and Applied Chemistry (IUPAC) for naming organic compounds.

For compound 3.1.1:

OH

|

CH3-CH-CH2-CH-CH2-CH3

We start by identifying the longest carbon chain, which contains six carbon atoms. This gives us the base name "hexane." Since there are two hydroxyl groups (-OH) attached, we add the suffix "-ol" to indicate the presence of alcohol functional groups. Additionally, there are two methyl groups (CH3) attached to the second and fourth carbon atoms. These are indicated with the prefixes "2,4-dimethyl-." Putting it all together, the IUPAC name for compound 3.1.1 is 2,4-dimethyl-3-hexanol.

For compound 3.1.2:

OH

|

CH-CH2-C=C-CH2

We start by identifying the longest carbon chain, which contains four carbon atoms. This gives us the base name "butene." Since there are two hydroxyl groups (-OH) attached, we add the prefix "di-" before the base name. Additionally, the double bond is present between the second and third carbon atoms, so we indicate this with the suffix "-ene." Putting it all together, the IUPAC name for compound 3.1.2 is 2,3-dihydroxybut-1-ene.

The IUPAC names for the given compounds are 2,4-dimethyl-3-hexanol (3.1.1) and 2,3-dihydroxybut-1-ene (3.1.2). These names follow the rules and conventions of IUPAC nomenclature for organic compounds.

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The safety relief system is an important component of a process plant. A good safety relief system ensures that the equipment is protected against overpressure situations. Chlorination reactors with organic reactants require the utmost care in the design of the relief systems.

Considerations involved in designing safety relief system and relief scenario for a chlorination reactor with organic reactants are discussed below:

1. Hazard Identification: Identify the hazards associated with the reaction chemistry of the chlorination reactor with organic reactants. Also, assess the potential failure scenarios that may lead to an overpressure event.

2. Relief Scenarios: Consider the design of relief scenarios that will be used to protect the reactor and the surrounding equipment. The scenarios should be designed to address all potential overpressure events.

3. Relief Devices: Choose the right type of relief device(s) based on the process parameters and the required relief scenario. The relief devices must be designed to relieve the pressure within the reactor in a safe manner.

4. Relief Sizing: Calculate the size of the relief devices based on the maximum potential relief flow rate. The sizing should be done in such a way that the device can handle the maximum expected pressure with a reasonable margin of safety.

5. Relief Piping: Design the relief piping such that it has the capacity to handle the maximum expected relief flow rate. The piping should be arranged in such a way that it can relieve the pressure in a safe manner.

6. Relief Header and Disposal: Design the relief header and the disposal system in such a way that it can safely handle the maximum expected relief flow rate. The header and the disposal system should be arranged in such a way that they do not pose a hazard to the surrounding equipment and personnel.

7. Testing and Maintenance: Test the relief system regularly to ensure that it functions as expected. Also, maintain the system in accordance with the manufacturer's recommendations to ensure that it remains in good working order.

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a) Metallic conduction and electrolytic conduction: Metallic conduction is the flow of electric current in metals due to the movement of delocalized electrons, while electrolytic conduction is the flow of electric current in electrolytes through the movement of ions.

a) Metallic conduction occurs in metals, where there is a sea of delocalized electrons that are free to move throughout the material. When a potential difference is applied across the metal, these electrons drift in the direction of the electric field, resulting in the flow of electric current. Metallic conduction is characterized by the movement of electrons, which are negatively charged particles.

On the other hand, electrolytic conduction occurs in electrolytes, which are solutions containing ions. When an electrolyte is placed in an electric field, the positive ions (cations) migrate towards the negative electrode (cathode), while the negative ions (anions) migrate towards the positive electrode (anode). This movement of ions results in the flow of electric current through the solution. Electrolytic conduction is characterized by the movement of ions, which are charged particles.

metallic conduction involves the movement of electrons in metals, while electrolytic conduction involves the movement of ions in electrolytes.

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The mass of KCl that crystallizes out is approximately 1280.36 kg.

Given parameters:

Initial temperature T1 = 360 K

Final temperature T2 = 290 K

Weight of KCl = 1500 kg

Relative density of the solution = 1.2

Solubility of KCl = 53.35 g/100 g of water (at 290 K)

We need to calculate the mass of KCl that crystallizes out after cooling down the saturated solution.

Let's find the concentration of the solution at T1:

Concentration = Mass of solute / Mass of solvent+ solute

Concentration = 1500 kg / (1.2 * 1000 kg) = 1.25 kg/kg of solution (or) 1250 g/kg of solution

We know that the solubility of KCl at 290 K is 53.35 g/100 g of water.

So, the solubility of KCl in 1000 g (1 kg) of water is 533.5 g/ kg of water.

Therefore, the solubility of KCl in 1250 g of water (which is present in 1 kg of solution) is (533.5 / 1000) * 1250 g/kg of water = 667.1875 g/kg of water.

The concentration of the saturated solution at T1 is 1250 + 667.1875 = 1917.1875 g/kg of solution. This is the maximum concentration of KCl that can be present in the solution at 360 K.

At T2 (290 K), the solubility of KCl is 53.35 g/100 g of water. So, the concentration of the solution at T2 is (53.35 / 100) * 1000 g/kg of water = 533.5 g/kg of water.

In order for KCl to crystallize out of the solution, its concentration has to exceed the maximum solubility of KCl at 290 K, which is 533.5 g/kg of water.

Therefore, the mass of KCl that crystallizes out is:

Mass of KCl = (Concentration at T1 - Concentration at T2) * Weight of solvent

Mass of KCl = (1917.1875 - 533.5) * 1.2 * 1000 kg = 1280362.5 g = 1280.3625 kg

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The phase diagram represents the different phase transitions that occur in matter. The arrow labeled "1" represents the transition from a solid to a liquid state, which is commonly known as melting or fusion.

When a substance undergoes melting, it absorbs a specific amount of energy known as the latent heat of fusion. To identify the arrow that most likely represents a phase change involving the same amount of energy as arrow 1, we need to consider the specific phase transitions and their associated energy changes. The phase transition directly opposite to melting on the phase diagram is the transition from a liquid to a solid state, known as freezing or solidification. This transition involves the release of the same amount of energy that was absorbed during melting.

Hence, the arrow that most likely represents the phase change involving the same amount of energy as arrow 1 is arrow "6," which signifies the transition from a liquid to a solid state. Both melting and freezing involve the same amount of energy exchange, as they are reversible processes occurring at the same temperature.

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Answer:

The compounds differ in (2) molecular formula.

Explanation

The molecular formula represents the actual number and types of atoms present in a molecule. In the given compounds, the arrangement of atoms is different, resulting in different molecular formulas.

The first compound is an organic molecule with a central oxygen atom (O) bonded to two carbon atoms (C) and two hydrogen atoms (H) on each side. Its molecular formula is C2H6O.

The second compound is an organic molecule with a chain of four carbon atoms (C) and 10 hydrogen atoms (H). Its molecular formula is C4H10.

Therefore, the compounds differ in their molecular formulas, as the arrangement and number of atoms are distinct. The other options mentioned, such as gram-formula mass, percent composition by mass, and physical properties at STP, may vary between compounds but are not the factors that differentiate these specific compounds in this context.

Answer:

Most plants cannot use nitrogen directly from the atmosphere.

Explanation:

(A) The differential equation for oxygen concentration, x(t), in the tent is given by:

dx/dt = (F_in * x_in - F * x) / V

where:

dx/dt is the rate of change of oxygen concentration with respect to time,

F_in is the feed gas flow rate,

x_in is the oxygen concentration in the feed gas,

F is the gas withdrawal flow rate,

x is the current oxygen concentration in the tent, and

V is the volume of the tent.

(B) To integrate the equation, we need additional information such as the initial oxygen concentration in the tent. Once we have this information, we can use the initial condition and the differential equation to solve for x(t) as a function of time. The time it takes for the mole fraction of oxygen in the tent to reach 0.33 can be determined by substituting this value into the expression for x(t) and solving for time.

(a) The differential equation for oxygen concentration, x(t), can be derived by applying the principle of conservation of mass to the oxygen in the tent. The rate of change of oxygen concentration is equal to the rate of oxygen entering the tent minus the rate of oxygen being withdrawn, divided by the volume of the tent.

dx/dt = (F_in * x_in - F * x) / V

(b) To integrate the differential equation, we need an initial condition. Let's assume the initial oxygen concentration in the tent is x(0) = x_0. Integrating the differential equation with this initial condition yields:

∫ dx / (F_in * x_in - F * x) = ∫ dt / V

Integrating both sides of the equation will give us an expression for x(t). However, the specific integration limits and the integration process depend on the initial and boundary conditions.

To determine the time it takes for the mole fraction of oxygen in the tent to reach 0.33, we can substitute x(t) = 0.33 into the expression for x(t) and solve for time.

The differential equation dx/dt = (F_in * x_in - F * x) / V represents the rate of change of oxygen concentration in the tent. By integrating this equation with suitable initial and boundary conditions, we can obtain an expression for x(t) as a function of time. The time it takes for the mole fraction of oxygen to reach a specific value can be determined by substituting that value into the expression for x(t) and solving for time.

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When ionic bonds form, the resulting compounds are option A) electrically neutral.

Ionic bonds are formed between atoms that have significantly different electronegativities. In this type of bond, one atom donates electrons to another atom, resulting in the formation of positive and negative ions. The positively charged ion is called a cation, while the negatively charged ion is called an anion.

The key characteristic of ionic compounds is that they are electrically neutral. This means that the overall charge of the compound is zero. The positive charges of the cations are balanced by the negative charges of the anions, resulting in a neutral compound.

For example, in the formation of sodium chloride (NaCl), sodium (Na) donates one electron to chlorine (Cl). This results in the formation of a sodium cation (Na+) and a chloride anion (Cl-). The positive charge of the sodium ion is balanced by the negative charge of the chloride ion, making the compound electrically neutral.

In summary, when ionic bonds form, the resulting compounds are electrically neutral because the positive and negative charges of the ions balance each other out, creating a net charge of zero.

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A Mitsubishi smelting furnace is a continuous smelting furnace used for the smelting of copper, nickel, and other base metals. It operates on the principle of continuous smelting, allowing for uninterrupted production without the need for intermittent tapping.

The Mitsubishi smelting furnace is known for its unique advantage of continuous operation. Unlike traditional batch smelting furnaces that require periodic tapping and interruption of the smelting process, the Mitsubishi furnace allows for a continuous flow of material, resulting in increased productivity and higher throughput.

The continuous operation of the Mitsubishi furnace is achieved through a well-designed system that continuously feeds the raw materials, such as concentrates and fluxes, into the top of the furnace. Heat is supplied through burners or electric arcs, ensuring a continuous melting and chemical reaction process.

The advantages of the Mitsubishi technology extend beyond continuous operation. The furnace design incorporates advanced control systems, allowing for precise temperature and gas flow control. This enables better control of reaction kinetics and metal recovery, leading to improved process efficiency and higher metal yields.

Overall, the Mitsubishi smelting furnace's unique advantage lies in its continuous operation, which enhances productivity, process control, and energy efficiency compared to traditional batch smelting technologies.

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Processes of microelectronics, such as chemical vapor deposition (CVD), play a crucial role in the production of microelectronic devices. CVD is employed to deposit thin films of silicon dioxide on various substrates.

Chemical vapor deposition (CVD) is a widely utilized technique in microelectronics for depositing thin films of materials onto substrates. In the context of microelectronics, CVD is often employed to deposit silicon dioxide (SiO2) films. Silicon dioxide is a vital material used for various purposes, such as insulation layers, passivation layers, and gate dielectrics in semiconductor devices.

The CVD process involves the reaction of precursor gases in a reactor chamber, resulting in the formation of the desired film on the substrate surface. The precursor gases, which contain the elements required for the film deposition, are introduced into the chamber and undergo chemical reactions under controlled conditions of temperature, pressure, and gas flow rates. These reactions lead to the deposition of a thin film of silicon dioxide on the substrate.

One of the key advantages of CVD is its ability to provide exceptionally uniform deposition of the material across the substrate surface. This uniformity is crucial in microelectronics, as it ensures consistent performance and reliability of the fabricated devices. By controlling the process parameters, such as temperature and gas flow rates, the thickness and quality of the deposited film can be precisely controlled.

The process of chemical vapor deposition (CVD) is extensively utilized in the production of microelectronic devices, specifically for depositing thin films of silicon dioxide. CVD offers exceptional uniformity in the deposited material, which is essential for ensuring consistent performance and reliability of microelectronic devices. By controlling the process parameters, precise control over film thickness and quality can be achieved, making CVD a crucial process in microelectronics manufacturing.

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In the given conditions, the desired reaction is to react 10% of substance A and substance B in a stirred tank at 65 °C and pH 3.5. The product formed is continuously removed from the system.

To determine the reaction conditions, we need to consider the reaction kinetics and the reaction rate. The reaction rate is usually dependent on factors such as temperature, pH, and reactant concentrations. However, without specific information about the reaction kinetics and the specific substances involved, it is difficult to provide precise calculations.

However, to achieve the desired conversion of 10%, you may need to adjust parameters such as residence time, feed rates, and reactant concentrations. This can be done through process optimization and experimentation. By varying these parameters and monitoring the reaction progress, you can find the optimal conditions that yield the desired conversion.

To react 10% of substance A and substance B in a stirred tank, continuous feeding and product removal are necessary. However, without detailed information about the reaction kinetics and specific substances involved, it is challenging to provide precise calculations for the required feed rates, residence time, and other parameters. Process optimization and experimentation would be required to determine the optimal conditions to achieve the desired conversion.

The given question in complete form is, It is desired to react 10% of substance A and substance B in a stirred tank at 65 °C and pH: 3.5 conditions. In this system where continuous feeding is made, the product formed is taken from the system intermittently. This process is achieved by drawing 10% of the reactor content according to the residence time in the reactor using vacuum. Accordingly, draw the shape of the system you propose so that the product (C) can be produced under the desired conditions and show the necessary control units and elements on the figure in question.

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a. The density of the oil at 5,000 psia and 140°F is approximately 72.440 lb/ft³.

b. The total formation volume factor at 5,000 psia and 140°F is approximately 0.02827.

To calculate the density of the oil at 5,000 psia and 140°F, we can use the Standing's correlation for the oil density:

ρo = ρw + (1 - ρw) * (0.972 + 0.000147 * API * p)

where:

ρo is the density of the oil in lb/ft³,

ρw is the density of water at 60°F (since we don't have the specific gravity of the water at 140°F, we will assume it is the same as at 60°F, which is 62.4 lb/ft³),

API is the API gravity of the oil (35°API in this case),

p is the pressure in psia.

Using the given values, we can calculate the oil density:

ρo = 62.4 + (1 - 62.4) * (0.972 + 0.000147 * 35 * 5000)

ρo = 62.4 + (1 - 62.4) * (0.972 + 0.000147 * 175000)

ρo = 62.4 + (1 - 62.4) * (0.972 + 25.725)

ρo = 62.4 + (1 - 62.4) * 26.697

ρo = 62.4 + 0.376 * 26.697

ρo = 62.4 + 10.040

ρo = 72.440 lb/ft³

So, the density of the oil at 5,000 psia and 140°F is approximately 72.440 lb/ft³.

Now, let's calculate the total formation volume factor (FVF) at 5,000 psia and 140°F. We can use the Standing's correlation for the FVF:

Bo = Bg * (1 + c * (Rsb - Rs))

where:

Bo is the oil formation volume factor,

Bg is the gas formation volume factor,

c is the oil formation volume factor correction factor (assumed to be 0.00005 psi⁻¹ in this case),

Rsb is the solution gas-oil ratio at the bubble-point pressure (from the reservoir fluid properties table),

Rs is the actual solution gas-oil ratio.

To find the solution gas-oil ratio (Rs), we can use the following equation:

Rs = (Bg / Bo) * (P - Pb)

where:

P is the pressure (5,000 psia in this case),

Pb is the bubble-point pressure (4,000 psia in this case).

Using the given values and assuming Bg = 0.02827 (from the gas gravity), we can calculate the solution gas-oil ratio:

Rs = (0.02827 / Bo) * (5,000 - 4,000)

Rs = (0.02827 / Bo) * 1,000

Now, we need to find Rsb from the reservoir fluid properties table. Since we don't have that information, we'll assume Rsb = 100 scf/STB.

Rs = (0.02827 / Bo) * 1,000 = 100

Now, we can rearrange the equation to solve for Bo:

Bo = Bg / (1 + c * (Rsb - Rs))

Bo = 0.02827 / (1 + 0.00005 * (100 - Rs))

Bo = 0.02827 / (1 + 0.00005 * (100 - 100))

Bo = 0.02827 / (1 + 0.00005 * 0)

Bo = 0.02827 / (1 + 0)

Bo = 0.02827

So, the total formation volume factor (Bo) at 5,000 psia and 140°F is approximately 0.02827.

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a) The number of equilibrium stages required in the column is approximately 8 stages.

b) The position of the feed plate is at the 5th stage.

a) The number of equilibrium stages required in the column can be determined using the McCabe-Thiele method based on the given reflux ratio and desired product compositions.

Draw the operating line on the equilibrium diagram (Figure 1) from the composition of the distillate (Xp = 0.96) to the composition of the bottoms (0.04).

Draw a line parallel to the operating line, intersecting the equilibrium curve at the point corresponding to the feed composition (0.4). This point is called the q-line.

From the q-line, draw a line to the intersection with the operating line. The pinch point is where this happens.

Count the number of theoretical stages from the top of the diagram to the pinch point. This is the number of equilibrium stages required in the column.

Based on the given information, the number of equilibrium stages required in the column is approximately 8 stages.

b) The position of the feed plate can be determined by counting the number of stages from the top of the column to the feed stage. In this case, since the feed is a mixture of two-thirds vapor and one-third liquid, the feed plate is located at approximately 2/3 of the total number of stages, which is 2/3 * 8 = 5.33. We can round it to the nearest whole number, so the feed plate is located at the 5th stage.

c) To determine the liquid and vapor flow rates in the stripping section, we need to consider the material balance and the reflux ratio.

At each stage, the liquid flow rate (L) can be calculated as:

L = D + B

The vapor flow rate (V) can be calculated as:

V = L / (R + 1)

D = 3.5 * B (reflux ratio Rp = 3.5)

Using this information, we can calculate the liquid and vapor flow rates in the stripping section.

d) To determine the minimum number of stages graphically using Figure (2), we need to locate the point on the equilibrium curve where the feed composition (0.4) intersects with the q-line. From that point, we draw a horizontal line to the y-axis (mole fraction of methanol in vapor) and read the value, which corresponds to the minimum number of stages required.

However, Figure (2) is not provided in the given information, so we cannot determine the minimum number of stages graphically.

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A distillation column is to be designed to separate methanol and water continuously. The feed of 100 kmol contains 40 mol/h of methanol and 60 mol/h of water and is a mixture of two- thirds vapor and one-third liquid. The column pressure will be 101.3 kPa (1 atm), for which the equilibrium data are shown in figure (1) The distillate composition (methanol) is Xp 0.96 and the water composition in the bottoms is 96%. The reflux ratio Rp 3.5. Find: a) The number of equilibrium stages required in the column. (6 pts) b) The position of feed plate? (2 pts) c) Liquid and vapor flow rates in the stripping section. (4 pts) d) Graphically, determine the minimum number of stages using figure (2). (4 pts) 1 0.9 0.8 0.7 0.6 Mole fraction of methanol in vapor 0.5 0.4 0.3 0.2 0.1 0 0 1 0.8 0.9 0.1 0.2 0.5 0.3 0.4 0.7 0.6 Mole fraction of methanol in liquid Figure (1)

To calculate the time required to dry the filter cake, we need additional information such as the airflow rate, humidity, and drying characteristics of the filter cake. Without these details, it is not possible to provide a specific calculation for the drying time. The drying time can be determined using appropriate drying rate equations or empirical correlations specific to the material and drying conditions.

To determine the drying time for the filter cake, we need to consider factors such as the airflow rate, humidity, and drying characteristics of the filter cake. These factors will influence the evaporation rate and thus the drying time.

Additionally, the specific drying characteristics of the filter cake, such as its porosity and moisture content, will play a significant role in determining the drying time.To calculate the drying time, we typically use drying rate equations or empirical correlations specific to the particular material and drying conditions.

To accurately calculate the drying time for the filter cake, additional information such as the airflow rate, humidity, and drying characteristics of the filter cake is necessary. The drying time can be determined using appropriate drying rate equations or empirical correlations specific to the material and drying conditions. It's important to consider the unique properties of the filter cake and the specific drying process to obtain accurate results. Without this information, it is not possible to provide a specific calculation or draw a conclusion regarding the drying time of the filter cake in this particular example.

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In a beer brewery, the levels of maintenance refer to the different stages or categories of maintenance activities that are performed to ensure the smooth operation and reliability of the brewing equipment and facilities. These levels can vary depending on the complexity of the maintenance tasks and the skills required to perform them. Here are the explanations for two levels of maintenance commonly seen in beer breweries:

1. Level 1 - Organizational Maintenance:

At this level, the maintenance activities primarily focus on the day-to-day operations and basic upkeep of the brewing equipment. These tasks are often carried out by the operational staff at the brewery site who have basic maintenance skills. The activities involved at this level may include routine inspections, cleaning, lubrication, and minor repairs or adjustments. The goal is to maintain the equipment in good working condition, prevent breakdowns, and ensure the production process runs smoothly.

2. Level 2 - Intermediate Maintenance:

The intermediate maintenance level involves more specialized tasks that may require the involvement of dedicated maintenance personnel or specialized technicians. This level includes maintenance activities performed on mobile or fixed units within the brewery, such as specific brewing vessels, fermentation tanks, or packaging equipment. These tasks often require a higher level of technical expertise and knowledge of the brewing process. Examples of activities at this level can include equipment calibration, troubleshooting and diagnostics, preventive maintenance, component replacement, and equipment optimization.

It's important to note that the levels of maintenance may vary depending on the size of the brewery, the complexity of the brewing process, and the level of automation in place. Larger breweries with more advanced equipment and automation systems may have additional levels of maintenance, such as advanced diagnostics and predictive maintenance, to ensure maximum efficiency and minimize downtime.

In summary, the levels of maintenance in a beer brewery range from basic organizational maintenance performed by operational staff to intermediate maintenance carried out by dedicated maintenance personnel or specialized technicians. These levels reflect the varying complexity and skill requirements of the maintenance tasks involved in ensuring the smooth operation of the brewery's equipment and facilities.

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the product will contain 50 kmol of O₂ and 100 kmol of C₂H₄O. The correct answer is: 50 kmol, 100 kmol, 100 kmol O₂.

The balanced chemical equation for the reaction is:

2C₂H₂ + O₂ → 2C₂H₄O

According to the stoichiometry of the reaction, 2 moles of C₂H₂ react with 1 mole of O₂ to produce 2 moles of C₂H₄O.

Given:

- 100 kmol of C₂H₄

- 100 kmol of O₂

Since the stoichiometry of the reaction is 2:1 for C₂H₂ to O₂, the limiting reactant will be the one that is present in lesser quantity. In this case, the limiting reactant is O₂ since there is only 100 kmol of it compared to 100 kmol of C₂H₄.

The extent of the reaction can be calculated based on the limiting reactant. Since 1 mole of O₂ reacts with 2 moles of C₂H₂, the maximum extent of the reaction (moles of O₂ consumed) will be:

Extent = 1/2 * 100 kmol = 50 kmol

Therefore, 50 kmol of O₂ will be consumed in the reaction.

Using the stoichiometry, we can determine the moles of C₂H₄O produced. Since 2 moles of C₂H₂ produce 2 moles of C₂H₄O, and the extent of the reaction is 50 kmol, the moles of C₂H₄O formed will be:

Moles of C₂H₄O = 2 * 50 kmol = 100 kmol

So, the product will contain 50 kmol of O₂ and 100 kmol of C₂H₄O. The correct answer is: 50 kmol, 100 kmol, 100 kmol O₂.

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To obtain acid with a specific concentration by evaporating a 62% mass fraction of H2SO4 solution, the amount of water needed to evaporate from 1 m3 of the solution is determined. The density of H2SO4 is given as 1560 kg/m3.

To calculate the amount of water required to evaporate from 1 m3 of the H2SO4 solution, we first need to determine the mass of the solution. Since the mass fraction of H2SO4 is given as 62%, it means that 62% of the mass of the solution is sulfuric acid, and the remaining 38% is water.

Given that the density of H2SO4 is 1560 kg/m3, we can calculate the mass of H2SO4 in the solution by multiplying the volume (1 m3) by the density (1560 kg/m3) and the mass fraction (0.62):

Mass of H2SO4 = 1 m3 * 1560 kg/m3 * 0.62 = 967.2 kg

Since the total mass of the solution is the sum of the masses of H2SO4 and water, we can calculate the mass of water:

Mass of water = Total mass of solution - Mass of H2SO4

Mass of water = 1 m3 * 1560 kg/m3 - 967.2 kg = 592.8 kg

Therefore, to obtain acid with the desired concentration, approximately 592.8 kg of water needs to be evaporated from 1 m3 of the H2SO4 solution. It's important to note that the calculation assumes that the volume remains constant during the evaporation process. In practical scenarios, there may be some volume changes due to temperature and pressure variations. Additionally, factors such as heat transfer, vaporization efficiency, and equipment design should be considered for precise control of the evaporation process.

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The limiting reactant in the given reaction process, where ethylene gas (C₂H₄) and water vapor (H₂O) react to produce ethanol (C₂H₅OH), is water vapor (H₂O).

To determine the limiting reactant, we compare the stoichiometric ratio of the reactants to the actual ratio in the equimolar mixture. The balanced equation for the reaction is:

C₂H₄(g) + H₂O(g) → C₂H₅OH(l)

From the equation, we can see that the stoichiometric ratio of ethylene to water is 1:1. However, since the mixture is given as equimolar, it means that the actual ratio of ethylene to water is also 1:1.

The concept of limiting reactant states that the reactant that is completely consumed or runs out first determines the amount of product formed. In this case, since the ratio of ethylene to water is equal in the equimolar mixture, the limiting reactant will be the one that is present in the least amount, and that is water vapor (H₂O).

In the given reaction process where ethylene gas (C₂H₄) and water vapor (H₂O) react to produce ethanol (C₂H₅OH), water vapor is the limiting reactant. This means that the amount of ethanol produced will be determined by the availability of water vapor. To optimize the reaction and increase the yield of ethanol, it would be necessary to ensure sufficient water vapor is present or to adjust the reactant ratios accordingly.

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