The Claussius-Clapeyron equation is given by the expression,
ln P = - ΔHvap / RT + C
Define all the terms in the Claussius-Clapeyron equation and show how the enthalpy of vaporization and boiling point may be obtained from experimental data.
Napthalene has a melting point of 80.2 °C. The vapour pressure of the liquid is 1.3 kPa at 85.8 °C and 5.3 kPa at 119.3 °C. Calculate the enthalpy of vaporization and the entropy of vaporization at the boiling point.
R = 8.3143 J K-1 mol-1
1 atm = 101325 N m-2