Homework Help is Here – Start Your Trial Now!
Engineering
Chemical Engineering
3G K/S NO 1st exam.pdf Mass Transfer Operations Q1: 1" Exam ٤:٠٦ م Third Year A binary mixture of air with CO2 exists at 312 K and 1.2 atm. It is required to calculate the molar flux of CO₂ through air across a 4 mm thick layer. If the mole fraction of CO2 at the end planes of this layer are 12% and 22% and the diffusivity of CO2 through air at 1.9 atm and 325 K is 1.7 x 105 m²/s, find the molar flux of CO₂ across this layer assuming: i. Equimolar counter diffusion. ii. Diffusion through stagnant layer. Q2: Ammonia can be absorbed using water as a solvent. The ammonia is highly water soluble such that all the ammonia disappears as soon as it reaches the water surface. What will happen to the rate of absorption of ammonia from air-ammonia mixture if we increase the total pressure of the system from 120 kPa to 220 kPa assuming that: i. The mole fraction in the gas mixture is 14% and the solvent used for absorption is pure water. Assuming that the resistance to mass transfer lies within the gas film. ii. The mole fraction in the gas mixture is 14% and the partial pressure of ammonia in the solvent is 6.5 kPa. III Dr. Anas Bdiwi Salman כ

3G K/S NO 1st exam.pdf Mass Transfer Operations Q1: 1" Exam ٤:٠٦ م Third Year A binary mixture of air with CO2 exists at 312 K and 1.2 atm. It is required to calculate the molar flux of CO₂ through air across a 4 mm thick layer. If the mole fraction of CO2 at the end planes of this layer are 12% and 22% and the diffusivity of CO2 through air at 1.9 atm and 325 K is 1.7 x 105 m²/s, find the molar flux of CO₂ across this layer assuming: i. Equimolar counter diffusion. ii. Diffusion through stagnant layer. Q2: Ammonia can be absorbed using water as a solvent. The ammonia is highly water soluble such that all the ammonia disappears as soon as it reaches the water surface. What will happen to the rate of absorption of ammonia from air-ammonia mixture if we increase the total pressure of the system from 120 kPa to 220 kPa assuming that: i. The mole fraction in the gas mixture is 14% and the solvent used for absorption is pure water. Assuming that the resistance to mass transfer lies within the gas film. ii. The mole fraction in the gas mixture is 14% and the partial pressure of ammonia in the solvent is 6.5 kPa. III Dr. Anas Bdiwi Salman כ

Introduction to Chemical Engineering Thermodynamics
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:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
See similar textbooks
icon
Related questions
Question

Solve Q2

3G K/S NO 1st exam.pdf Mass Transfer Operations Q1: 1" Exam ٤:٠٦ م Third Year A binary mixture of air with CO2 exists at 312 K and 1.2 atm. It is required to calculate the molar flux of CO₂ through air across a 4 mm thick layer. If the mole fraction of CO2 at the end planes of this layer are 12% and 22% and the diffusivity of CO2 through air at 1.9 atm and 325 K is 1.7 x 105 m²/s, find the molar flux of CO₂ across this layer assuming: i. Equimolar counter diffusion. ii. Diffusion through stagnant layer. Q2: Ammonia can be absorbed using water as a solvent. The ammonia is highly water soluble such that all the ammonia disappears as soon as it reaches the water surface. What will happen to the rate of absorption of ammonia from air-ammonia mixture if we increase the total pressure of the system from 120 kPa to 220 kPa assuming that: i. The mole fraction in the gas mixture is 14% and the solvent used for absorption is pure water. Assuming that the resistance to mass transfer lies within the gas film. ii. The mole fraction in the gas mixture is 14% and the partial pressure of ammonia in the solvent is 6.5 kPa. III Dr. Anas Bdiwi Salman כ
Transcribed Image Text:3G K/S NO 1st exam.pdf Mass Transfer Operations Q1: 1" Exam ٤:٠٦ م Third Year A binary mixture of air with CO2 exists at 312 K and 1.2 atm. It is required to calculate the molar flux of CO₂ through air across a 4 mm thick layer. If the mole fraction of CO2 at the end planes of this layer are 12% and 22% and the diffusivity of CO2 through air at 1.9 atm and 325 K is 1.7 x 105 m²/s, find the molar flux of CO₂ across this layer assuming: i. Equimolar counter diffusion. ii. Diffusion through stagnant layer. Q2: Ammonia can be absorbed using water as a solvent. The ammonia is highly water soluble such that all the ammonia disappears as soon as it reaches the water surface. What will happen to the rate of absorption of ammonia from air-ammonia mixture if we increase the total pressure of the system from 120 kPa to 220 kPa assuming that: i. The mole fraction in the gas mixture is 14% and the solvent used for absorption is pure water. Assuming that the resistance to mass transfer lies within the gas film. ii. The mole fraction in the gas mixture is 14% and the partial pressure of ammonia in the solvent is 6.5 kPa. III Dr. Anas Bdiwi Salman כ
Expert Solution
steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Introduction to Chemical Engineering Thermodynami…
Introduction to Chemical Engineering Thermodynami…
Chemical Engineering
ISBN:
9781259696527
Author:
J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:
McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Process Dynamics and Control, 4e
Process Dynamics and Control, 4e
Chemical Engineering
ISBN:
9781119285915
Author:
Seborg
Publisher:
WILEY
Industrial Plastics: Theory and Applications
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:
9781285061238
Author:
Lokensgard, Erik
Publisher:
Delmar Cengage Learning
Unit Operations of Chemical Engineering
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:
9780072848236
Author:
Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:
McGraw-Hill Companies, The
SEE MORE TEXTBOOKS