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Methane (A) diffuses at steady state through a tube containing helium (B). At point 1, the partial pressure of CH4 is 15.55 kPa and at point 2, which is 30 mm apart, the partial pressure of CH4 is 10 kPa. The total pressure is 101.32 kPa and temperature is 293 K. The diffusivity is 6.75 x 10-5 m2 /s. i) Calculate the flux of CH4 at steady state for equimolar counter diffusion. ii) Calculate the partial pressure at a point 2 cm away from point 1.

Methane (A) diffuses at steady state through a tube containing helium (B). At point 1, the partial pressure of CH4 is 15.55 kPa and at point 2, which is 30 mm apart, the partial pressure of CH4 is 10 kPa. The total pressure is 101.32 kPa and temperature is 293 K. The diffusivity is 6.75 x 10-5 m2 /s. i) Calculate the flux of CH4 at steady state for equimolar counter diffusion. ii) Calculate the partial pressure at a point 2 cm away from point 1.

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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Methane (A) diffuses at steady state through a tube containing helium (B). At point 1, the partial pressure of CH4 is 15.55 kPa and at point 2, which is 30 mm apart, the partial pressure of CH4 is 10 kPa. The total pressure is 101.32 kPa and temperature is 293 K. The diffusivity is 6.75 x 10-5 m2 /s. i) Calculate the flux of CH4 at steady state for equimolar counter diffusion. ii) Calculate the partial pressure at a point 2 cm away from point 1.
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