Chemistry General Organic Chemistry Methods of Purification of Organic Compounds Single Correct MCQ
Published on: August 14, 2026

In steam distillation, the sum of the vapour pressure of the volatile compound and that of

water is:

A
Equal to atmospheric pressure
B
Less than atmospheric pressure
C
More than atmospheric pressure
D
Exactly half of the atmospheric pressure

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The correct answer is:
A

In steam distillation the mixture begins to boil when the sum of the vapour pressure of the organic liquid and that of water becomes equal to that of atmospheric pressure.

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