Question

Name one pair of substances whose mixture can be separated completely by the distillation

Answer 1

Salt and water or sugar n water

Answer 2

Chloroform and Ethanol are a pair whose mixture can be completely separated by distillation.

Explanation:

• Two substances whose boiling points differ from each other by 10 degrees can be easily separated by the process of distillation.
• To separate chloroform, the conventional distillation technique won't work due to the minimal boiling azeotrope present between chloroform and ethanol.
• Therefore a process called extractive distillation is undertaken to separate them.
• This even enhances the volatility of chloroform to ethanol. Certain organic compounds are used as agents in the process of extractive distillation.