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When a-iron is subjected to an atmosphere of hydrogen gas, the concentration of hydrogen in the iron, CH (in weight percent), is a function of hydrogen pressure, PH, (in MPa), and absolute temperature (T) according to 27.2 kJ/mol CH = 1.34 × 10-2 PH, exp( RT Furthermore, the values of Do and Qafor this diffusion system are 4.8 × 10-7 m²/s and 15 kJ/mol, respectively. Consider a thin iron membrane 2.5-mm thick that is at 319°C. Calculate the diffusion flux [in kg/(m²-s)] through this membrane if the hydrogen pressure on one side of the membrane is 0.14 MPa, and on the other side 7.4 MPa, given that the density of iron is 7.87 g/cm³. Part 1 (a) What is the concentration of hydrogen at the low-pressure (or B) side in wt%? CH(B) = wt% (b) What is the concentration of hydrogen at the high-pressure (or A) side in wt%? CHIA) = i wt%

When a-iron is subjected to an atmosphere of hydrogen gas, the concentration of hydrogen in the iron, CH (in weight percent), is a function of hydrogen pressure, PH, (in MPa), and absolute temperature (T) according to 27.2 kJ/mol CH = 1.34 × 10-2 PH, exp( RT Furthermore, the values of Do and Qafor this diffusion system are 4.8 × 10-7 m²/s and 15 kJ/mol, respectively. Consider a thin iron membrane 2.5-mm thick that is at 319°C. Calculate the diffusion flux [in kg/(m²-s)] through this membrane if the hydrogen pressure on one side of the membrane is 0.14 MPa, and on the other side 7.4 MPa, given that the density of iron is 7.87 g/cm³. Part 1 (a) What is the concentration of hydrogen at the low-pressure (or B) side in wt%? CH(B) = wt% (b) What is the concentration of hydrogen at the high-pressure (or A) side in wt%? CHIA) = i wt%

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
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When a-iron is subjected to an atmosphere of hydrogen gas, the concentration of hydrogen in the iron, CH (in weight percent), is a function of hydrogen pressure, PH, (in MPa), and absolute temperature (T) according to 27.2 kJ/mol CH = 1.34 × 10-2 VPH, exp| RT Furthermore, the values of Do and Qa for this diffusion system are 4.8 × 107 m²/s and 15 kJ/mol, respectively. Consider a thin iron membrane 2.5-mm thick that is at 319°C. Calculate the diffusion flux [in kg/(m2-s)] through this membrane if the hydrogen pressure on one side of the membrane is 0.14 MPa, and on the other side 7.4 MPa, given that the density of iron is 7.87 g/cm³. Part 1 (a) What is the concentration of hydrogen at the low-pressure (or B) side in wt%? CH(B) = wt% %3D (b) What is the concentration of hydrogen at the high-pressure (or A) side in wt%? CH(A) = wt%
Transcribed Image Text:When a-iron is subjected to an atmosphere of hydrogen gas, the concentration of hydrogen in the iron, CH (in weight percent), is a function of hydrogen pressure, PH, (in MPa), and absolute temperature (T) according to 27.2 kJ/mol CH = 1.34 × 10-2 VPH, exp| RT Furthermore, the values of Do and Qa for this diffusion system are 4.8 × 107 m²/s and 15 kJ/mol, respectively. Consider a thin iron membrane 2.5-mm thick that is at 319°C. Calculate the diffusion flux [in kg/(m2-s)] through this membrane if the hydrogen pressure on one side of the membrane is 0.14 MPa, and on the other side 7.4 MPa, given that the density of iron is 7.87 g/cm³. Part 1 (a) What is the concentration of hydrogen at the low-pressure (or B) side in wt%? CH(B) = wt% %3D (b) What is the concentration of hydrogen at the high-pressure (or A) side in wt%? CH(A) = wt%
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