Assertion(A) : Azeotropic mixtures are formed only by non-ideal solutions and they may have boiling points either greater than both the components (or) less than both the components.
Reason(R): The composition of vapour phase is same as that of the liquid phase of an azeotropic mixture.

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(A) is true but (R) is false

Both (A) and (R) are true and (R) is not the correct explanation of (A)

Both (A) and (R) are true and (R) is the correct explanation of (A)

Both (A) and (R ) are false

answer is B.

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Detailed Solution

A mixture which distill without change in composition is called an azeotropic mixture. A mixture showing positive deviation shows minimum boiling azeotrope whereas the mixture showing negative deviation shows maximum boiling azeotrope at a particular composition.

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