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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
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B
dimerization of benzoic acid
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C
trimerization of benzoic acid
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D
solvation of benzoic acid
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Solution

The correct option is B dimerization of benzoic acid
The 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.

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Chemistry

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