Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
∆Hvap refers to the heat of vaporization, which is the amount of energy required to convert one gram of a substance from its liquid phase to its gaseous phase at constant temperature and pressure.
The process in which a substance changes from its liquid phase to its gaseous phase at temperatures below its boiling point, without reaching boiling point.