Background: Clausius and Entropy

In the previous lesson, we learned about


, where to find entropy data (NIST WebBook) and



HS Phase Diagrams

In this lesson, we will use the

Clausius Inequality

and the definition of entropy to define

entropy generation


Clausius Inequality

Clausius Inequality equation.
Application of the Clauisus Inequality to the two-step process shown in the PV diagram.
PV diagram of a process that proceeds from state 1 to state 2 along irreversible path A and returns to state 1 along internally reversible path B.
Integral form of the definition of


Path A is irreversible and
path B is internally reversible.
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Ch 7, Lesson C, Page 1 - Background: Clausius and Entropy