Question

68% of aqueous HNO3 cannot be concentrated further by fractional distillation.give reason​

Answer 1

Answer:

One cannot concentrate nitric acid by distillation beyond 68% because Nitric acid is miscible with water in all proportions, forming hydrates at low temperatures. Since Nitric acid is not very easy to dilute so there is no way to separate HNO3 beyond 68% by distillation.

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Answer 2

Answer:

One cannot concentrate nitric acid by distillation beyond 68% because Nitric acid is miscible with water in all proportions, forming hydrates at low temperature. Since Nitric acid is not very easy to dilute so there is no way to separate HNO3 beyond 68% by distillation.

Explanation:

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