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The Principles of Thermodynamics
book

The Principles of Thermodynamics

by N.D. Hari Dass
October 2013
Intermediate to advanced content levelIntermediate to advanced
352 pages
13h 56m
English
CRC Press
Content preview from The Principles of Thermodynamics
176 The Principles of Thermodynamics
T
e
=37.9646
C = 311.1146K. The entropy lost by water is 90 ·4Rln(T
e
/313.15)
while that gained by alcohol is 46 ·2Rln(T
e
/303.15. The net gain in entropy
during thermalization is therefore 0.0383 R=0.318 J/K.
The entropy of mixing is on the other hand 5Rln(5/6) Rln(1/6) =
2.703R =22.475J/K. Thus we see that entropy increase due to mixing far
exceeds the entropy gain due to thermalization. Both are positive, pointing to
the irreversibility of both processes.
Example 9.2: Mixing entropy for polymers in Flory-Huggins(FH) theory
This example is to show how the ideal mixing entropy, rst shown for ideal gases and
then
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Publisher Resources

ISBN: 9781466512085