Boiling point composition diagram of the liquid-vapour equilibrium for A and ^B is shown in the figure. If a binary liquid mixture of A and B is distilled fractionally, which of the following would be correct observation?

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Composition of the stll (residue) will approach pure liquid B only

Composition of the distillate will approach pure A only

Composition of distillate and residue will approach pure A and B respectively

Neither of the component can be obtained in pure state

answer is C.

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Detailed Solution

T°B > T°A [From diagram] B→ Residue A → Distillate

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