Question

(a) Write down the integrated form of the Clausius-Clapeyron equation and explain why its application is limited to only 2 types of phase equilibria which each involve a gas. (b) The vapour pressure of toluene is 8.00 kPa at 40.3ºC and 2.67 kPa at 18.4ºC. Calculate the enthalpy of vaporisation, ΔHvapm, for toluene (gas constant R = 8.314 J K-1 mol-1 ).

Answer 1