Question

A and B are miscible liquids and they combine to form a mixture. This mixture can be separated by method C. The boiling point of A is $78{}^{\circ }C$ and that of B is ${100}^{\circ }C$. Identify the process C and which of the following is the volatile component?

• A. C:- Fractional distillation Volatile component:- B
• B. C:- Distillation Volatile component:- B
• C. C:- Distillation Volatile component:- A
• D. C:- Fractional distillation Volatile component:- A

Answer 1

The correct option is D

C:- Fractional distillation

Volatile component:- A

It is given that the boiling point of liquid A = $78{}^{\circ }C$

The boiling point of liquid B = ${100}^{\circ }C$

The difference in the boiling point of the liquids A and B = ${100}^{\circ }C-78{}^{\circ }C=22{}^{\circ }C$

Fractional distillation is used to separate a mixture of miscible liquids (liquids that properly mix into each other without creating distinct phases) when the difference between the boiling points of liquids is less than $25{}^{\circ }C$.