Question: how much heat energy is required to convert solid ethanol?
Answer: Ethanol (C 2H 5OH) melts at -114 °C and boils at 78 °C. Its density is 0.789 g/mL. The enthalpy of fusion of ethanol is 5.02 kJ/mol, and its enthalpy of vaporization is 38.56 kJ/mol. The specific heats of solid and liquid ethanol are 0.97 J/g-°C and 2.3 J/g-°C, respectively.