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enthalpy of vaporization watch

1. The heat of vaporization of methanol is 35.2 kJ mol-1. If the boiling point of methanolis 338 K, calculate the vapour pressure of methanol at 273 K

For this I was going to use clapeyron equation but there's no pressure given so i'm not sure what to do
2. (Original post by jacksonmeg)
The heat of vaporization of methanol is 35.2 kJ mol-1. If the boiling point of methanolis 338 K, calculate the vapour pressure of methanol at 273 K

For this I was going to use clapeyron equation but there's no pressure given so i'm not sure what to do
Bearing in mind I haven't had to touch a problem like this for 2 years.... I'm thinking you need to balance the chemical potentials of both phases.

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