Question

What is the basic principle behind the simple distillation process?

• A. Sufficient difference in the boiling points of two miscible liquids and the two liquids should boil without decomposition.
• B. The two liquids should be immiscible.
• C. The two liquids should have a molecular weight greater than $\text{200 g/mol.}$
• D. Difference in boiling and melting points of two miscible liquids should be less than ${30}^{\circ }C$.

Answer 1

The correct option is A Sufficient difference in the boiling points of two miscible liquids and the two liquids should boil without decomposition.

In a mixture of two or more miscible liquids, separation of various liquids depends on their boiling points. The liquid having a lower boiling point boils first and can be obtained first from the fractionating column than the liquid having a higher boiling point. In simple distillation, sufficient difference in the boiling points of two miscible liquids must be there and the two liquids should boil without decomposition.