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The boiling point of an azeotropic mixtu...

The boiling point of an azeotropic mixture of water and ethyl alcohol is less than that of the theoretical value of water and alcohol mixture. Hence the mixture shows

A

no deviation from Raoult's law

B

positive deviation from Raoult's law

C

negative deviation from Raoult's law

D

that the solution is unsaturated

Text Solution

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The correct Answer is:
B
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The solution which boil at constant temperature like a pure liquid and possess same composition in liquid as well as vapour state are called azeotropes. The components of azetropes cannot be separated by fractional distillation. Only non-ideal solutions form azeotropes. Solutions with negative deviation form maximum boiling azeotrope and the solutions with positive deviation form minimum boiling azeotrope. The boiling point of an azeotrope is never equal to the boiling points of any of the components of the azeotrope. Answer the following question: The azeotropic solutions of two miscible liquids The azeotropic mixture of water and HCl boils at 108.5^(@)C . This solution is