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Question 750009
JEE Chemistry · Medium

Solutions and Colligative Properties: Van't Hoff factor MCQ

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Van't Hoff factorMediumQuestion 750009

Question

For acetic acid in benzene, dimerisation occurs. The van't Hoff factor i is:
  1. A
    < 1
    Correct
  2. B
    > 1
  3. C
    = 1
  4. D
    = 2

Correct answer

< 1

Explanation

Dimerisation decreases the number of solute particles. If all molecules dimerise: i = 0.5. Generally for association i < 1; for dissociation i > 1.

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