EML3100 Thermo - Summer 2001 - Web Lesson

Entropy changes in solids liquids and ideal gases - PAGE 5

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If instead of using


we can use
,

dividing through by T gives us

Previously, for ideal gases, we determined that


and the ideal gas equation gives us
.

Substituting for dh and v/T, we get,


and integrating to get the entropy change, the solution to the integral is

This cannot be simplified further since Cpo is a function of temperature.
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