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

ionization of benzoic acid

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dimerization of benzoic acid

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trimerization of benzoic acid

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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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Similar questions

The molecular mass of benzoic acid in benzene, as determined by depression in freezing point method, corresponds to:

60

= 122

^{- 1}

5

100

5.73

10^{o} C

{2.6}^{o}

K_{f} = 5.2^{o} C k g {m o l}^{- 1}

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