In order to use the analytical semi-infinite-solid solution to predict the concentration of the diffusing species, these conditions should be (approximately) met EXCEPT: The surface concentration Cs must be held constant. The concentration near the back surface (opposite to the side where the new source of diffusion species is introduced) must be kept constant at C0. There must NOT be other sources of diffusing species than the surface source (Cs). The initial concentration C0 must be zero. The surface concentration Cs must be different from the initial concentration C0.
In order to use the analytical semi-infinite-solid solution to predict the concentration of the diffusing species, these conditions should be (approximately) met EXCEPT: The surface concentration Cs must be held constant. The concentration near the back surface (opposite to the side where the new source of diffusion species is introduced) must be kept constant at C0. There must NOT be other sources of diffusing species than the surface source (Cs). The initial concentration C0 must be zero. The surface concentration Cs must be different from the initial concentration C0.
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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In order to use the analytical semi-infinite-solid solution to predict the concentration of the diffusing species, these conditions should be (approximately) met EXCEPT:
The surface concentration Cs must be held constant.
The concentration near the back surface (opposite to the side where the new source of diffusion species is introduced) must be kept constant at C0.
There must NOT be other sources of diffusing species than the surface source (Cs).
The initial concentration C0 must be zero.
The surface concentration Cs must be different from the initial concentration C0.
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