Question

Explain latent heat of fusion and latent heat of vaporisation and support your answer with the help of an activity.

Answer 1

the latent heat of fusion is the amount of thermal energy required to melt a solid or to freeze a liquid.

Answer 2

the heat energy which has to be applied to change the state of a substance is called it's latent heat.
the latent heat of fusion of a solid is the quantity of heat in joules required to convert 1 kg of the solid (at it's melting point) to liquid, without any change in temperature.
Latent heat of vaporization is a physical property of a substance When a material in liquid state is given energy, it changes its phase from liquid to vapor; the energy absorbed in this process is called heat of vaporization. The heat of vaporization of water is about 2,260 kJ/kg, which is equal to 40.8 kJ/mol.