At 25 oc, the vapor pressure of water is 23.8 torr and the heat of vaporization is 43.9 kj/mol. calculate the vapor pressure of water at 50. oc

The vapor pressure of water at is 93.8 torr

Explanation:

The vapor pressure is determined by Clausius Clapeyron equation:

where,

= initial pressure at = 23.8 torr

= final pressure at = ?

= enthalpy of vaporisation = 43.9 kJ/mol = 43900 J/mol

R = gas constant = 8.314 J/mole.K

= initial temperature =

= final temperature =

Now put all the given values in this formula, we get

Therefore, the vapor pressure of water at is 93.8 torr

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