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An azeotropic solution of two liquid has...

An azeotropic solution of two liquid has boiling point lower than either of them when it

A

Shows negative deviation from Raoult's law.

B

Shows no deviation from Raoult's law.

C

Shows positive deviation from Raoult's law.

D

Is saturated.

Text Solution

Verified by Experts

The correct Answer is:
C
Azeotropic mixture are also known as constant boiling mixtures. They are liquid mixtures which boil over without any change in the composition. Such mixtures cannot be separated into components by fractional distillation. They are of two types: maximum boiling azeotropes and minimum boiling azeotropes.
Maximum boiling azeoutropes are formed by solutions having negative deviations. Boiling point is maximum. For example,
Water and HCl
Water and nitric acid
Chloride form and acetone
Acetic acid and pyridine
Minimum boiling azeotropes are formed by solutions having deviations. Boiling point is minimum. For example
Acetic acid and toluence
Pyridince and water
Ethanol and benzene
Water and ethanol
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