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Components of a binarey mixture of two l...

Components of a binarey mixture of two liquids A and B were being separted by distillation. After some time separation of components stopped and composition of vapour phase vecame same as that of liquid phase. Both the components stated coming in the distillate. Explain why this happened ?

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This indicates that the liquids A and B form a non- ideal solution and upon distillation when the composition of the mixture in Viquid and vapour phase becomes the same, mixture is known as azeotropic mixture and components of an azeotropic mixture cannot be separated by distillation.
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