write a short note on latent heat
Answers
Answer:
Latent heat, energy absorbed or released by a substance during a change in its physical state (phase) that occurs without changing its temperature. ... The latent heat is normally expressed as the amount of heat (in units of joules or calories) per mole or unit mass of the substance undergoing a change of state.
Answer:
Latent heat is when there is a change of state
of a object from solid to liquid or liquid to gaseous
or solid to gaseous.
The melting point of ice is 0° C .
The temperature of water remains constant on
100°C .
The heat energy absorbed at constant temperature during transformation of solid into liquid is called latent heat of
fusion.
The amount of heat energy absorbed at constant temperature by unit mass of a solid to convert into liquid phase is called the specific latent heat of fusion.
The constant temperature at which the liquid transform into gaseous state is called boiling point of the liquid.
The heat energy absorbed at constant temperature during transformation of liquid into gas is called latent heat of
vaporization.
The amount of heat energy absorbed at constant temperature by the unit mass of a liquid to convert into gaseous phase is called specific latent heat of vaporization.
The values of melting point and latent heat depend on atmospheric pressure.