heat of vaporization of phenylhydrazine

The vapor pressure of phenylhydrazine

has been found to be (from 25℃ to 240℃):

logP = 7.9046 – [2366.4 / (T + 230)]

, where P is in atm and T is in ℃.

What is the heat of vaporization of phenylhydrazine

in Btu/lb-mol at 366.7 K?

Use the Clausius-Clapeyron equation.

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