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  4. Which will form maximum boiling point azeotrope

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Q. Which will form maximum boiling point azeotrope

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Solution:

The solutions (liquid mixture) which boils at constant temperature and can distil as such without any change in composition are called azeotropes.
Solution of HNO3 and H2O will form maximum boiling point azeotrope. Maximum boiling azeotropes show negative deviation from Raoult's law.
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Boiling point of the azeotrope of these two solutions is 393.5K