Question

Define latent heat of Fusion.

Answer 1

Hint: It is the amount of heat required to change 1 g of a substance at the temperature of its melting point from the solid to the liquid state without changing temperature.

Complete step by step answer:
Latent heat is like something which is hidden. The form of heat which didn’t give sense to pursue. Basically latent heat is the heat by which phase of material got changed but the temperature remains constant. It is the heat required to change the phase without changing the temperature. Whereas the heat which is required to change the phase due to temperature change is known as sensible heat. So A solid state has a more closely packed molecule than a liquid state. In the process of the melting heat is absorbed from the surrounding to increase the intermolecular distance between the molecules to change the distance of the molecules.
The amount of heat energy required in the process of the melting for a unit mass of solid to be converted into liquid is called latent heat of fusion. When the temperature remains constant.
Heat Energy Q = mL
Where m is the mass of the substances and
L is the latent heat of Fusion.
The SI unit of latent heat of Fusion is J/Kg.

Note:
Latent Heat of Fusion is also known as Enthalpy of Fusion of a substance.
Latent Heat of Fusion is defined as the change in the enthalpy due to providing energy or heat to a specific quantity. This is because to change the state from solid to liquid at a constant pressure.