1. Ethanol boils at 78.4°C and the enthalpy of vaporization of ethanol is 42.4 kJ mol-1. Calculate the entropy of vaporization of ethanol.
2. Calculate the entropy change for the conversion of following :
(a) 1 g ice to water at 273 K, AHf for ice = 6.025 kJ mol-1.
(b) 36 g water to vapour at 373 K; AHy for H20 = 40.63 kJ mol-1.