The temperature-dependence of the vapour pressure of solid and liquid benzene is
given below.
Solid:
T / K, p / kPa
265, 1.83
275, 3.88
Liquid:
280, 5.40
290, 9.05
Use the Clausius-Clapeyron equation for the vapour pressure above a liquid or
solid to estimate the enthalpies of sublimation and vaporization of benzene, identifying
any approximations that you use.
As a 7-mark question, is this really just, integrate the Clausius-Clapeyron equation (or go from the integrated form which everyone knows anyway), rearrange for the enthalpy change, and then plug in the numbers twice?