Concept explainers
(a)
Interpretation:
The temperature at which the first drop of condensate forms along with its composition is to be determined.
Concept introduction:
Dew-point temperature is the temperature at which the first drop of liquid appears when a vapor is cooled slowly at the constant pressure. At this point the condensation starts.
Using a
(b)
Interpretation:
The vapor and liquid phase mole fractions of benzene and toluene are to be determined. Also, the ratio of total moles in vapor to the total moles in liquid is to be calculated.
Concept introduction:
Dew-point temperature is the temperature at which the first drop of liquid appears when a vapor is cooled slowly at the constant pressure. At this point the condensation starts.
Using a
A flowchart is the complete representation of a process through boxes or other shapes which represents process units and arrows that represents the input and output of the process. The flowchart must be fully labelled to infer important data about the process involved.
In a system, a conserved quantity (total mass, mass of a particular species, energy or momentum) is balanced and can be written as:
Here, ‘input’ is the stream which enters the system. ‘generation’ is the term used for the quantity that is produced within the system. ‘output’ is the stream which leaves the system. ‘consumption’ is the term used for the quantity that is consumed within the system. ‘accumulation’ is used for the quantity which is builds up within the system.
All the equations which are formed are then solved simultaneously to calculate the values of the unknown variables.
(c)
Interpretation:
The temperature at which the last bubble of the vapor condense is to be determined. Also, it composition is to be calculated.
Concept introduction:
Dew-point temperature is the temperature at which the first drop of liquid appears when a vapor is cooled slowly at the constant pressure. At this point the condensation starts.
Using a
Want to see the full answer?
Check out a sample textbook solutionChapter 6 Solutions
Elementary Principles of Chemical Processes, Binder Ready Version
- determine the binary diffusion coefficient of CO2 in air at a) 200 K and 1 atm b)400K and 0.5atm c)600 K and 5 atmarrow_forwardUsing 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?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? [should be 0.6]d. When 90% has been vaporized, what is the temperature, and what are the liquid and vapor compositions?arrow_forward
- 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
- Introduction to Chemical Engineering Thermodynami...Chemical EngineeringISBN:9781259696527Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark SwihartPublisher:McGraw-Hill EducationElementary Principles of Chemical Processes, Bind...Chemical EngineeringISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEYElements of Chemical Reaction Engineering (5th Ed...Chemical EngineeringISBN:9780133887518Author:H. Scott FoglerPublisher:Prentice Hall
- Industrial Plastics: Theory and ApplicationsChemical EngineeringISBN:9781285061238Author:Lokensgard, ErikPublisher:Delmar Cengage LearningUnit Operations of Chemical EngineeringChemical EngineeringISBN:9780072848236Author:Warren McCabe, Julian C. Smith, Peter HarriottPublisher:McGraw-Hill Companies, The