The enthalpy of vaporization of a compound is always positive.

Name: The enthalpy of vaporization of a compound is always positive.
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Quizplus · Accepted Answer

The enthalpy of vaporization is the amount of energy required to convert a liquid to a gas at a constant pressure and temperature. This process requires energy to break the intermolecular attractions between particles in the liquid phase. Therefore, the enthalpy of vaporization is always positive as energy is required to overcome these attractive forces.

The Enthalpy of Vaporization of a Compound Is Always Positive