Question

Define latent heat of vaporization.

Answer 1

1. Latent heat of vaporization: Latent heat of vaporization can be defined as the amount of heat energy that is required to change $1\mathrm{kg}$ of water into its vapour at atmospheric pressure without any change in temperature at its boiling point.
2. The boiling point of water is $100°\mathrm{C}$. The particles in steam (water vapour) at $100°\mathrm{C}$.has more energy than water at the same temperature because the particle in steam have absorbed extra energy in the form of latent heat of vaporization.