Question

The energy required to vaporize 1 mole of a liquid is known as ____________

(a) Molar heat of fusion

(b) Molar heat of freezing

(c) Molar heat of boiling

(d) Molar heat of vaporisation

I have been asked this question in a national level competition.

My question comes from Boiling Point in division Criteria of Purity and Characterisation of Materials of Engineering Chemistry I

Answer 1

Right option is (d) Molar heat of vaporisation

Easiest explanation: The energy required to vaporize 1 mole of a liquid is known as the molar heat of vaporisation. It is the amount of heat necessary to boil (or condense) one mole of a substance at its boiling point.