Quiz Predict whether Van’t Hoff factor will be less or greater than one,...

Predict whether Van’t Hoff factor will be less or greater than one, when…

CBSE Chemistry class 12 question and answer | Predict whether Van’t Hoff factor will be less or greater than one, when Ethanoic acid is dissolved in benzene.

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February 27, 2024

Predict whether Van’t Hoff factor will be less or greater than one, when Ethanoic acid is dissolved in benzene.

Ans.

When ethanoic acid ( $C H_{3} COO H$ ) is dissolved in benzene ( $C_{6} H_{6}$ ), it does not dissociate into ions as it would in water. Instead, it remains primarily in molecular form. In benzene, which is a nonpolar solvent, the intermolecular forces between ethanoic acid molecules are stronger than the forces between the solvent molecules and the solute molecules.

Since ethanoic acid does not dissociate into ions in benzene, the Van’t Hoff factor ( $i$ ) will be equal to 1. This is because the Van’t Hoff factor represents the number of particles into which a solute dissociates in a solution. In the case of ethanoic acid in benzene, there is no dissociation, and hence $i = 1$ .

Therefore, the Van’t Hoff factor will be equal to one when ethanoic acid is dissolved in benzene.