Practicing Success

Target Exam

CUET

Subject

Chemistry

Chapter

Physical: Solutions

Question:
If two liquids A and B form minimum boiling azeotrope at some specific composition the which of than following statement is true?
Options:
A-B interactions are stronger than those between A-A or B-B.
Vapour pressure of solution increases because more number of liquids A and B can escape from the solution
Vapour pressure of solution decreases because less number of molecules of only one of the liquids escape from the solution.
A-B interactions are weaker than those between A-A or B-B.
Correct Answer:
A-B interactions are weaker than those between A-A or B-B.
Explanation:
The solutions which show a large positive deviation from Raoult’s law form minimum boiling azeotrope at a specific composition. In case of positive deviation from Raoult’s law, A-B interactions are weaker than those between A-A or B-B.