COMEDK · Chemistry · 17. Solutions
Osmotic pressure observed when benzoic acid is dissolved in benzene is less than that expected from theoretical 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
Answer & Solution
Correct Answer
(C) benzoic acid gets associated in benzene
Step-by-step Solution
Detailed explanation
Osmotic pressure is a colligative property. It depends upon the number of solute particles. Benzoic acid undergoes dimerisation. \(\therefore\) Number of particles reduces \((i < 1)\) Hence, osmotic pressure observed is less than the theoretical consideration.
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