Purification and characteristic of organic compounMedium

Question

Given below are two statements:

Statement I: Vapours of the liquid with higher boiling point condense before vapours of the liquid with lower boiling points in fractional distillation.

Statement II : The vapours rising up in the fractionating column become richer in high boiling component of the mixture.

In the light of the above statements, choose the correct answer from the option given below :

Options

A.Both Statement I and Statement II are true
B.Both Statement I and Statement II are false
C.Statement I is true but Statement II are false
D.Statement I is false but Statement II are true

Solution

Sol. [Key Concept: In fractional distillation the higher-boiling vapour condenses first (Statement I true), but rising vapours become richer in the lower-boiling component, not the higher-boiling one (Statement II false).]

Statement I : True

Statement II : False

Reason - As vapours rise, they become richer in the lower-boiling component, not high-boiling component.

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