MHT CET Chemistry question

The molecular mass of acetic acid dissolved in water is less than 60, and when dissolved in benzene it is 120. This difference in behavior of is because

(A)Water prevents association of acetic acid
(B)Acetic acid dissociates in water and associates in benzeneCorrect
(C)Acetic acid fully dissolves in benzene
(D)Acetic acid does not ionize benzene

Answer: (B)

Solution

In water acetic acid ionises, increasing the number of particles and giving an observed mass below 60, while in non-polar benzene it dimerises through

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Question ID VK-061115