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Question
Nitric acid cannot be concentrated beyond 68% by the distillation of a dilute solution of HNO3, State the reason.
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Solution
Nitric acid cannot be concentrated beyond 68% by the distillation of a dilute solution of HNO3 because it forms an azeotropic mixture i.e, at 121°C it boils without any change in its concentration of the mixture with water
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