Class 11Chemistry8-3.Organic Chemistry : Purification and characterizationPurification of Organic Compounds
MediumExplain why an organic liquid vaporises at a temperature below its boiling point during steam distillation.
(N/A) In steam distillation,the organic liquid starts to vaporise when the sum of the vapour pressure of the organic liquid $(p_1)$ and the vapour pressure of water $(p_2)$ becomes equal to the atmospheric pressure $(p).$ That is,$p = p_1 + p_2.$ Since $p_1 < p,$ the organic liquid vaporises at a temperature lower than its normal boiling point.
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