Question

The enthalpy of vaporization (symbol ∆Hvap), also known as the

(latent) heat of vaporization or heat of evaporation, is the amount
of energy (enthalpy) that must be added to a liquid substance to
tr

Answer 1

The enthalpy of vaporization is the amount of energy required to transform a liquid into a gas at a constant temperature and pressure.

Step-by-step explanation:

The Enthalpy of Vaporization (ΔHvap)

The enthalpy of vaporization, also known as the heat of vaporization or heat of evaporation, is the amount of energy that must be added to a liquid substance to transform it into a gas at a constant temperature and pressure. It is represented by the symbol ΔHvap and is measured in kilojoules per mole (kJ/mol).

Examples:

1. The enthalpy of vaporization of water at standard temperature is 44.01 kJ/mol.
2. The enthalpy of vaporization of ethanol is 38.56 kJ/mol.