How much heat energy is required to convert 84.5 g of solid ethanol at -114.5C to gasesous ethanol at 140.6 "C? The molar heat of fusion of ethanol is 4.60 kJ/mol, and its molar heat of vaporization is 38.56 kJ/mol, Ethanol has a normal melting point of -114.5C and a normal boiling point of 78.4C. The specific heat capacity of liquid ethanol is 2,453/g - "C, and that of gaseous ethanol is 1.431/g C. KJ