Question

latent heat of vaporisation​

Answer 1

Answer:

• Latent heat of vaporization is a physical property of a substance. It is defined as the heat required to change one mole of liquid at its boiling point under standard atmospheric pressure. It is expressed as kg/mol or kJ/kg. ... The heat of vaporization of water is about 2,260 kJ/kg, which is equal to 40.8 kJ/mol.

Explanation:

• Thee specific latent heat is different for solid to liquid transition and liquid to gas transition. For example, if we want to turn 20 g of ice into water we need Q = 20 g * 334 kJ/kg = 6680 J of energy. To turn the same amount of water into vapor we need Q = 45294 J .

Answer 2

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Latent heat of vaporization is a physical property of a substance. 

It is expressed as kg/mol or kJ/kg.


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