LECTURE PHYSICAL CHEMISTRY 3rd EDITION ROBERT G. MORTIMER

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The Clausius–Clapeyron Equation
The Clausius–Clapeyron equation is obtained by
integrating the Clapeyron equation in the case that one
of the two phases is a vapor (gas) and the other is a
condensed phase (liquid or solid). We make two
approximations: (1) that the vapor is an ideal gas, and
(2) that the molar volume of the condensed phase is
negligible compared with that of the vapor (gas) phase.
These are both good approximations.
- For a liquid–vapor transition with our approximations
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