Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN: 9781259696527
Author: J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher: McGraw-Hill Education
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Chapter 14, Problem 14.11P
The following reaction reaches equilibrium at 500°C and 2 bar:
If the system initially contains 5 mol
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Using Rachford-Rice in Excel, analyze flash distillation of the following feed stream at P = 1000 kPa and T = 30°C. Feed (1000 kmol/hr) is composed of ethane (25%), propane (30%), propylene (5%) and n-hexane (40%):a. What is the composition and flowrate of the vapor stream? [V should be 196 kmol/hr when solved]b. What is the composition and flowrate of the liquid stream?c. What fraction of the n-hexane (feed) ends up in the vapor phase?d. What fraction of the ethane (feed) ends up in the liquid phase?
A 40 mol % ethanol 60 mol % water mixture at 60 °C and 1 atm is heated. Using Figure 2-3 answer the following:a. At what temperature does the mixture first begin to boil? What is the composition of the first bubble of vapor?b. At what temperature would it stop boiling (assume no material is removed)? What is the composition of the last droplet of liquid?c. At 82 °C, what fraction is liquid? [should be 0.6]d. When 90% has been vaporized, what is the temperature, and what are the liquid and vapor compositions?
Chapter 14 Solutions
Introduction to Chemical Engineering Thermodynamics
Ch. 14 - Prob. 14.1PCh. 14 - A system initially containing 2 mol C2H4 and 3 mol...Ch. 14 - A system formed initially of 2 mol CO2 , 5 mol H2...Ch. 14 - Consider the water-gas-shift reaction:...Ch. 14 - Rework Prob. 14.4 for a temperature of: (a) HOOK:...Ch. 14 - Use the method of equilibrium constants to verify...Ch. 14 - Prob. 14.7PCh. 14 - For ideal gases, exact mathematical expressions...Ch. 14 - For the ammonia synthesis reaction written:...Ch. 14 - Peter. Paul, and Mary, members of a thermodynamics...
Ch. 14 - The following reaction reaches equilibrium at...Ch. 14 - The following reaction reaches equilibrium at...Ch. 14 - The following reaction reaches equilibrium at...Ch. 14 - The following reaction, hydrogenation of styrene...Ch. 14 - The gas stream from a sulfur burner is composed of...Ch. 14 - Prob. 14.16PCh. 14 - Ethylene is produced by the dehydrogenation of...Ch. 14 - The production of 1,3-butadiene can be carried out...Ch. 14 - The production of 1,3-butadiene can be carried out...Ch. 14 - For the ammonia synthesis reaction, 12N2g+32H2NH3g...Ch. 14 - Prob. 14.21PCh. 14 - Prob. 14.22PCh. 14 - Ammonium chloride NH4Cls decomposes upon heating...Ch. 14 - A chemically reactive system contains the...Ch. 14 - The relative compositions of the pollutants NO and...Ch. 14 - Carbon black is produced by the decomposition of...Ch. 14 - Consider the reactions 12N2g+12O2gNOg12N2g+O2gNO2g...Ch. 14 - Oil refineries often have both H2S and SO2 to...Ch. 14 - Species N2O4 and NO2 as gases come to equilibrium...Ch. 14 - The following isomerization reaction occurs in the...Ch. 14 - Prob. 14.32PCh. 14 - The feed gas to a methanol synthesis reactor is...Ch. 14 - Prob. 14.34PCh. 14 - Consider the gas-phase isomerization reaction: ....Ch. 14 - A low-pressure, gas-phase isomerization reaction,...Ch. 14 - Set up the equations required for solution of Ex....Ch. 14 - Reaction-equilibrium calculations may be useful...Ch. 14 - Ethylene oxide as a vapor and water as liquid,...Ch. 14 - In chemical-reaction engineering, special measures...Ch. 14 - The following problems involving chemical-reaction...Ch. 14 - The following is an industrial-safety rule of...Ch. 14 - Prob. 14.43PCh. 14 - The standard heat of reaction A/f3 for gas-phase...Ch. 14 - Ethanol is produced from ethylene via the...Ch. 14 - A good source for formation data for compounds is...Ch. 14 - Reagent-grade, liquid-phase chemicals often...Ch. 14 - Cracking propane is a route to light olefin...Ch. 14 - Equilibrium at 425 K and 15 bar is established for...
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- Using Rachford-Rice in Excel, analyze flash distillation of the following feed stream at P = 1000 kPa and T = 30°C. Feed (1000 kmol/hr) is composed of ethane (25%), propane (30%), propylene (5%) and n-hexane (40%):a. What is the composition and flowrate of the vapor stream? [196 kmol/hr]b. What is the composition and flowrate of the liquid stream?c. What fraction of the n-hexane (feed) ends up in the vapor phase?d. What fraction of the ethane (feed) ends up in the liquid phase?arrow_forwardConsidering the molar flux as estimated by the Whitman two-film theory, show the relationship between the mass transfer coefficients based on concentration, and mol fraction gradients, kc and ky, respectively, is given by: ky = Ckc, where C is the total concentration. do not use chatgpt please, i did not understan from it thats why i paid for bartlebyarrow_forwardConsidering the molar flux as estimated by the Whitman two-film theory, show the relationship between the mass transfer coefficients based on concentration, and mol fraction gradients, kc and ky, respectively, is given by: ky = Ckc, where C is the total concentration. please do not use chatgpt, i did not understand from it that is why i paid for this.arrow_forward
- We have a feed that is a binary mixture of methanol and water (55.0 mol% methanol) that is sent to a system of two flash drums hooked together. The vapor from the first drum is cooled, which partially condenses the vapor, and then is fed to the second flash drum. Both drums operate at a pressure of 1.0 atm and are adiabatic. The feed rate to the first drum is 1000.0 kmol/h. We desire a liquid product from the first drum that is 30.0 mol% methanol (x1 = 0.300). The second drum operates at a fraction vaporized of (V/F)2 = 0.250. The equilibrium data are in Table 2-8. Find the following for the first drum: y1, T1, (V/F)1, and vapor flow rate V1. Find the following for the second drum: y2, x2, T2, and vapor flow rate V2.arrow_forwardShow that the overall mass transfer coefficient, Ky, can be related to the individual gas and liquid film mass transfer coefficients, ky and kx, respectively, by the following equation: 1 K y = 1 + m kk y xarrow_forwardUse the approach given to solvearrow_forward
- Antoine constants for vapor pressure for n-pentane and n-hexane are listed in Table 2-3. a. Predict the vapor pressure at 0.0°C for pure n-pentane. b. Predict the boiling point of pure n-pentane at 3.0 atm pressure. c. Predict the boiling pressure if pure n-pentane is boiling at 0.0°C. d. At a pressure of 500.0 mm Hg and temperature of 30.0°C, predict the K values for n-pentane and n-hexane using Raoult’s law. e. If T = 30.0°C and p = 500.0 mm Hg, determine the mole fractions in the liquid and vapor phases of an equilibrium mixture of n-pentane and n-hexane. f. 1.0 moles of a mixture that is 75.0 mol% n-pentane and 25.0 mol% n-hexane is placed in a closed chamber. The pressure is adjusted to 500.0 mm Hg, and the temperature to 30.0°C. The vapor and liquid mole fractions were found in part e. How many moles of liquid and moles of vapor are there at equilibrium? g. If 1.0 mol/min of a mixture that is 75.0 mol% n-pentane and 25.0 mol% n-hexane is fed continuously to an equilibrium flash…arrow_forwardA 40 mol % ethanol 60 mol % water mixture at 60 °C and 1 atm is heated. Using Figure 2-3 answer the following:a. At what temperature does the mixture first begin to boil? What is the composition of the first bubble of vapor?b. At what temperature would it stop boiling (assume no material is removed)? What is the composition of the last droplet of liquid?c. At 82 °C, what fraction is liquid? d. When 90% has been vaporized, what is the temperature, and what are the liquid and vapor compositions?arrow_forwardIs a component with a lower vapor pressure more or less volatile than a component with a higher vapor pressure? Briefly explain.arrow_forward
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