Question

Refrigerators make use of the heat absorption required to vaporize a volatile liquid. a fluorocarbon liquid being investigated to replace a chlorofluorocarbon has a molar heat of vaporization of 26 kj/mol at 250 k and 750 torr. calculate

Answer 1

In order to determine the amount of energy required to vaporize a given amount of the fluorocarbon, we multiply its specific latent heat of vaporization with the number of moles being vaporized.

If 3 moles were to be vaporized, the amount of energy required would be:

Q = 26 kJ/mol * 3 moles
Q = 78 kJ