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- Benzoic acid, when dissolved in benzene, which of the following is correct.
Benzoic acid, when dissolved in benzene, which of the following is correct.
a) The benzoic acid will undergo dissociation.
(b) The benzoic acid will undergo association.
(c) Observed molar mass of benzoic acid in benzene will less than normal molar mass.
(d) Observed molar mass of benzoic acid in benzene is more than normal molar mass.
Answers (1)
As we learned
Vant Hoff factor for dissociation -
number of particles associated
degree of association
e.g. Carboxylic acid dimerized in non polar solvents like Hexane.
- wherein
n = 2 for dimerization
n = 3 for trimerization
Benzoic acid in benzene undergoes association through intermolecular hydrogen bonding. That's why observed molar mass of benzonic acid in benzene is more than normal molar mass.
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