How much heat would be required to convert 234.3 g of solid benzene, C6H6(s), at 5.5°C into benzene vapor, C6H6(g), at 100.0°C?
mp of C6H6(s) = 5.5°C
bp of C6H6 = 80.1°C
molar heat of fusion at 5.5°C = 9.92 kJ/mol
molar heat of vaporization at 80.1°C = 30.8 kJ/mol
molar heat capacity of C6H6 = 136 J/mol•°C
molar heat capacity of C6H6(g) = 81.6 J/mol•°C
a. 106 kJ
b. 158 kJ
c. 53 kJ
d. 32 kJ
e. 5049 kJ
Answer: B