MCQ
If two liquids A and B form minimum boiling azeotrope at some specific composition then ____________.
  • A
    A–B interactions are stronger than those between A–A or B–B.
  • B
    vapour pressure of solution increases because more number of molecules of liquids A and B can escape from the solution.
  • C
    vapour pressure of solution decreases because less number of molecules of only one of the liquids escape from the solution.
  • D
    A–B interactions are weaker than those between A–A or B–B.

Answer

  1. A–B interactions are weaker than those between A–A or B–B.

Explanation:

  1. The solutions which show large positive deviation from Rault's law form minimum boiling azeotrope at some specific composition.
  2. In case of positive deviation from Rault's law A-B interactions are weaker than those between A–A or B–B.

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