Question

What is latent heat of vaporisation ?​

Answer 1

First definition

It is defined as the heat required to change one mole of liquid at its boiling point under standard atmospheric pressure.

Second definition

the amount of heat needed for the conversion of 1kg of liquid at its boiling point to gas at same temperature.

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Answer 2

Required Answer :

$\mapsto$ The amount of heat energy required to change 1 kg of liquid to gas at its boiling point at a constant atmospheric temperature is called latent heat of vapourisation. Steam at 373 degree k contains more heat energy in the form of latent heat of vapourization. This causes more burns than boiling water at the same temperature.

❑ Latent heat of vaporization is the heat consumed or discharged when matter disintegrates, changing stage from fluid to gas stage at a consistent temperature. The enthalpy of vaporization, ΔHv, is additionally named the “latent heat of vaporization.” And ΔHv is the distinction between the enthalpy of the soaked fume and that of the immersed fluid at a similar temperature. The enthalpy of vaporization information is utilized in process estimations, for example, the plan of alleviation frameworks including unpredictable mixer.

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