The heat of vaporization of water at the normal boiling point, 373.2 K, is 40.66 kJ/mol. The

Question:

The heat of vaporization of water at the normal boiling point, 373.2 K, is 40.66 kJ/mol. The specific heat capacity of liquid water is 4.184 JK-1g-1 and of gaseous water is 2.02 J K-1g-1. Assume that these values are independent of temperature. What is the heat of vaporization of water at 298.2 K? Does this result agree with Appendix 4 data?