Question

# The molecular weight of benzoic acid in benzene as determined by depression in the freezing point method corresponds to:

A
ionization of benzoic acid
B
dimerization of benzoic acid
C
trimerization of benzoic acid
D
solvation of benzoic acid

Solution

## The correct option is B dimerization of benzoic acidThe molecular weight of benzoic acid in benzene is determined by the depression in freezing point method and comes out to be $$244$$. The actual molecular mass is $$122$$. Therefore, it corresponds to the dimers which are formed by hydrogen bonding.Chemistry

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