7. Define latent heat of vapourisation.
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Explanation:
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.
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the amount of heat energy required to convert unit mass of liquid into its vapour state without changing its temperature is called latent heat of vaporisation
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