An Introduction to Thermal Physics
An Introduction to Thermal Physics
1st Edition
ISBN: 9780201380279
Author: Daniel V. Schroeder
Publisher: Addison Wesley
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Chapter 2.6, Problem 37P

Using the Same method as in the text, calculate the entropy of mixing for a system of two monatomic ideal gases, A and B, whose relative proportion is arbitrary. Let N be the total number of molecules and let x be the fraction of these that are of species B. You should find Δ S m i x i n g = N K [ x ln x + ( 1 x ) ln ( 1 x ) ] .

Check that this expression reduces to the one given in the text when x = 1/2 .

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