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Osmotic pressure observed when benzoic a...

Osmotic pressure observed when benzoic acid is dissolved in benbzene is less than that expected from throretical considerations. This is because

A

benzoic acid is an organic solute

B

benzoic acid has higher molar mass than benzene

C

benzoic acid gets associated in benzene

D

benzoic acid gets dissociated in benzene

Text Solution

Verified by Experts

The correct Answer is:
C
Benzoic acid associates in benzene as `2C_(6)H_(5)COOH hArr (C_(6)H_(5)COOH)_(2)`
The number of particles decreases and hence osmotic pressure decreases.
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