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Which of the following statements is incorrect about an azeotropic mixture?

Option: 1

An azeotropic mixture has a constant boiling point.

 


Option: 2

The composition of an azeotropic mixture cannot be changed by simple distillation.


Option: 3

The boiling point of an azeotropic mixture is lower than the boiling points of its components.

 


Option: 4

An azeotropic mixture can be separated by fractional distillation.


Answers (1)

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An azeotropic mixture has a constant boiling point and the composition of an azeotropic mixture cannot be changed by simple distillation. This is because an azeotropic mixture has a fixed composition and any attempt to separate the components by distillation will result in the same composition in the distillate as in the original mixture. The boiling point of an azeotropic mixture is higher than the boiling points of its components, not lower. Therefore, option C is incorrect. An azeotropic mixture cannot be separated by fractional distillation as it has a constant boiling point.

 

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Ritika Harsh

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