Calculated and Experimental Enthalpies vap H and vap H exp of Download Table ALEKS Calculating Enthalpy of Vaporization from Vapor Pressure YouTube Solved Heat of vaporization of water at 100 degree C and Chegg.com Vapor Pressure Delta_{vap}H^ for water is +40.49 kJ moi^ 1 at 1 bar and 100C . Change in internal energy for this vaporization under same condition is Sarthaks eConnect Largest Online Education Community Delta Vap H Latent Heat of Vaporization Delta Hvap of Water calculated by corresponding states correlation