what is the name of the solution which distills without change in composition with temperature?
The solution which distills without change in composition at a particular temperature is called azeotropic mixture.
An azeotropic mixture is a mixture of two liquids having the same boiling point. These two liquids cannot be separated by simple distillation because of similar boiling point of the liquids. These mixtures are thus called constant boiling mixtures. These are formed by non – ideal solutions.
Types of Azeotropic Mixtures
It is of the following types:
a) Azeotropic Mixtures with minimum boiling point
The mixture of two liquids whose boiling point is less than either of the two pure components.
Example, Ethanol (95.5%) + water (4.5%) mixture boils at 351.5 K.
b) Azeotropic Mixtures with Maximum Boiling point:
The mixture of two liquids whose boiling point is more than either of the two pure components.
Example, HNO3 (68%) + water (32%) mixture boils at 393.5 K
An azeotropic mixture is a mixture of two liquids having the same boiling point. These two liquids cannot be separated by simple distillation because of similar boiling point of the liquids. These mixtures are thus called constant boiling mixtures. These are formed by non – ideal solutions.
Types of Azeotropic Mixtures
It is of the following types:
a) Azeotropic Mixtures with minimum boiling point
The mixture of two liquids whose boiling point is less than either of the two pure components.
Example, Ethanol (95.5%) + water (4.5%) mixture boils at 351.5 K.
b) Azeotropic Mixtures with Maximum Boiling point:
The mixture of two liquids whose boiling point is more than either of the two pure components.
Example, HNO3 (68%) + water (32%) mixture boils at 393.5 K