At 25°C the heat of fusion of aluminum is 10.6 kJ/mol and the heat of sublimation is 326.4 kJ/mol.What is the heat of vaporization of aluminum at 25°C?

Question

Quizplus · Accepted Answer

The heat of vaporization can be calculated using the heat of sublimation and the heat of fusion. The heat of sublimation is the total energy required to change a substance from solid to gas, which is the sum of the energy required to melt it (heat of fusion) and then vaporize it (heat of vaporization). Therefore, the heat of vaporization = heat of sublimation - heat of fusion = 326.4 kJ/mol - 10.6 kJ/mol = 315.8 kJ/mol.

At 25°C the Heat of Fusion of Aluminum Is 10