Question

What is the formula of latent heat energy?

Answer 1

Hint: First, we should know about the latent heat energy. The latent heat energy is defined as the heat energy that is absorbed or released which occurs when the transition phase of the substance takes place.

Complete Step By Step Answer:
Latent heat is defined as the energy which is absorbed or released occurs when the transition phase of the substance takes place. This transition of phase can be from gas to liquids or liquid to solid.
In other words, we can say that latent heat is the amount of heat radiated or absorbed during the phase transition of a substance at a constant temperature and pressure.
There are three different types of latent heat energy are as follows:
1. Latent heat of fusion
2. Latent heat of vaporization
3. Latent heat of sublimation
The formula of latent heat is as follows:
 $ Q = M \times L $
 $ Q $ is the amount of the substance.
 $ M $ is the mass of the substance.
 $ L $ is the latent heat energy. It can be latent heat of fusion or latent heat of vaporization. If latent heat of vaporization is given then we write $ {L_v} $ and in case of latent heat of fusion, we write $ {L_f} $ .
The unit of latent heat is $ Joules/Kg $ .

Note:
It is noted that latent heat is related to the total heat energy of the thermodynamic system and it is also called enthalpy. It is important to note that latent heat represents the temperature of the system which remains constants. It is the heat which is needed to put down the attractive forces that hold the atoms and molecules together in the substance.