Question

A sample of 58.90 g solid benzene at −2.3°C was heated until it absorbed 13.2 kJ of heat, at a constant pressure of 1 atmosphere. Using the data given in the table below, determine the final phase and final temperature of the benzene sample.

Properties of Benzene	Values
melting point	5.49°C
boiling point	80.09°C
heat of fusion at 5.49°C	9.87 kJ/mol
heat of vaporization at 80.09°C	30.72 kJ/mol
molar heat capacity of solid at 0°C	118.4 J/mol·K
molar heat capacity of liquid at 25°C	136.0 J/mol·K
molar heat capacity of gas at 95°C	103.98 J/mol·K

Answer 1