# Setting up pressure equations.

Set up the equations to solve P air (torr) : P H2O (torr) : change of H vap: and lnP.

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Use the clausius-claperron equation to determine the change of Hvap of a liquid:

Let dH ...

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Solution uses the Clausius-Claperron equation to determine the change of Hvap of a liquid. 65 words.

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