Components of a binary mixture of two liquids A and B were being separatedby distillation. After some time separation of components stopped andcomposition of vapour phase became same as that of liquid phase. Both thecomponents started coming in the distillate. Explain why this happened.

Open in App

Solution

This happened so because the mixture of two liquids A and B are azeotropic mixture.
Azeotropes are mixtures whose components cannot be separated by distillation and boils at constant temperature because these mixtures are non ideal solutions which shows deviation from Raoult's law.
For one of the intermediate composition, if the total vapour pressure of such solution is highest and boiling point is lowest, it is said to be minium boiling azeotropes. These show positive deviation from Raoult's law. Or else, if the total vapour pressure is least and boiling point is highest, it is said to be maximum boiling azeotropes. These show negative deviation from Raoult's law.

Suggest Corrections

Similar questions

A mixture of miscible liquids can be separated into its components by fractional distillation.

Q. “Two volatile and miscible liquids can be separated by fractional distillation into pure components.”

Q. Distillation is a process of separating the component substances from a liquid mixture by:

Fractional distillation is the separation of a mixture of miscible liquids into its component parts based on the difference in their boiling points. Based on this information, fractional distillation is a __________ process.

Crude petroleum oil is a complex mixture of organic liquids that occurs naturally beneath Earth’s surface. It was formed millions of years ago. Crude oil is vaporized and made to undergo fractional distillation where its components get separated as shown in the figure.

The organic liquids present in crude oil are separated in a fractional distillation chamber because they have different

Join BYJU'S Learning Program