Question

Define latent heat of vapourization.

Answer 1

Answer:

The enthalpy of vaporization, also known as the heat of vaporization or heat of evaporation, is the amount of energy that must be added to a liquid substance, to transform a quantity of that substance into a gas. The enthalpy of vaporization is a function of the pressure at which that transformation takes place.

Explanation:

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Answer 2

Answer:

$\boxed{\red{Latent\;heat\;of\;vapourization}}$

The amount of heat energy that is required to change 1kg of a liquid into vapours at atmospheric pressure at it's boling point is called latent heat of vapourization.

The latent heat of vapourization of water is 22.59*10^5 J/kg or 540 Kcal/kg.

This means 22.59*10^5 joules or 540kcals of heat is required to change 1 kg of water at it's boling point 373 K (100degree Celsius) into steam at the same temperature 373 K (100. degree Celsius)