The heat required by a matter to transform from liquid to vapors is known as latent heat of evaporation of latent heat of vaporization. It is the amount of heat required to convert unit mass of the liquid into vapors. Different liquids have different latent heat of evaporation and some examples are as follows:

Latent heat of evaporation of acetic acid is 402 kJ/kg = 96.01 cal/gram

Latent heat of evaporation of alcohol is 869 kJ/kg = 207.55 cal/gram

Latent heat of evaporation of water is 2257 kJ/kg = 539 cal/gram

Latent heat of evaporation of acetic acid is 402 kJ/kg = 96.01 cal/gram

Latent heat of evaporation of alcohol is 869 kJ/kg = 207.55 cal/gram

Latent heat of evaporation of water is 2257 kJ/kg = 539 cal/gram