At 100 °C, what is the latent heat of evaporation of water?

The latent heat of evaporation, also known as the enthalpy of vaporization, is the amount of energy required to turn a unit mass of a liquid into vapor without a change in temperature. At 100 °C, the latent heat of evaporation for water is typically around 2257 kJ/kg.

This value is significant because it reflects the energy needed to overcome the intermolecular forces holding the water molecules together in the liquid state. During the phase change from liquid to vapor at this boiling point, water requires this specific amount of energy to allow the molecules to disperse and enter the gaseous phase.

Knowing the correct value is crucial for calculations in thermodynamics, environmental sciences, and engineering applications, where heat exchange processes involving water are common. The figures in the other options are incorrect as they do not accurately represent the recognized latent heat of evaporation for water at 100 °C.