How much energy must be removed from a 94.4 g sample of benzene (molar mass = 78.11 g mol-1) at 322.0 K to solidify the sample and lower the temperature to 205.0 K? The following physical data may be useful: ΔvapH = 33.9 kJ mol-1
ΔfusH = 9.8 kJ mol-1
Cliq = 1.73 J g-1 °C-1
Cgas = 1.06 J g-1 °C-1
Csol = 1.51 J g-1 °C-1
Tmelting = 279.0 K
Tboiling = 353.0 K
A) 17.6 kJ
B) 11.8 kJ
C) 70.2 kJ
D) 10.5 kJ
E) 29.4 kJ
Correct Answer:
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