Explain the meaning of the statement. “ The specific latent heat of vaporization of alcohol is 204 kcal/kg.”

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Solution

Specific latent heat of vaporization is the quantity of heat required to convert a unit mass of the substance from a liquid state to a vapor state at its boiling point.
Specific latent heat of vaporization of alcohol is $204 k c a l / k g$ means $204 k c a l$ energy is required to convert $1 k g$ alcohol from a liquid state to a vapor state at its boiling point.

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