Question

C6h5cooh associate in benzene into a dimer the ratio of vant hoff factor of c6h5cooh in this solution to aqueous solution of nacl is​

Answer 1

Explanation:

Benzoic acid dissolved in benzene is found to have molecular mass double of its normal molecular mass. This is explained by the fact that benzoic acid forms a dimer in benzene solution due to hydrogen bonding.

i=

n (theoretical)

n (observed)

i=

2

1

i=0.5

n (observed)= number of solute particles present in solution.

n (theoretical)= number of solute particles without considering association/dissociation.

Van't Hoff factor, when benzoic acid is dissolved in benzene, will be 0.5.

Hence, the correct answer is option C.