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Question: Answered & Verified by Expert
The mixture that forms maximum boiling azeotrope is
ChemistrySolutionsNEETNEET 2019 (All India)
Options:
  • A Water and Nitric Acid
  • B Ethanol and Water
  • C Acetone and Carbon disulphide
  • D Heptane and Octane
Solution:
1300 Upvotes Verified Answer
The correct answer is: Water and Nitric Acid
The solutions that show large negative deviation from Raoult’s law form maximum boiling azeotrope at a specific composition. Nitric acid and water is an example of this class of azeotrope. This azeotrope has the approximate composition, 68% nitric acid and 32% water by mass, with a boiling point of 393.5K.

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