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(C) $1$. According to Raoult's law, adding a non-volatile solute decreases the vapour pressure of the solvent.$2$. The decrease in vapour pressure lea

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The osmotic pressure of an electrolytic solution is greater than a non-electrolytic solution of the same concentration.

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(C) $1$. According to Raoult's law, adding a non-volatile solute decreases the vapour pressure of the solvent.$2$. The decrease in vapour pressure leads to an elevation in the boiling point of the solvent.$3$. Osmotic pressure is a colligative property, which depends on the number of particles. Electrolytes dissociate into multiple ions, increasing the number of particles compared to non-electrolytes at the same concentration, thus resulting in higher osmotic pressure.$4$. Freezing point depression is a colligative property, but the freezing point itself is not.

Identify the correct statement from the following.

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$17.4\% (W/V)$ of potassium sulphate $(mol. wt. = 174)$ is isotonic with $4\% (W/V)$ aqueous solution of $NaOH$. If $NaOH$ is $100\%$ ionised,the degree of ionisation of potassium sulphate is $.......... \%$.

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Molal depression constant for a solvent is $4.0 \, K \, kg \, mol^{-1}$. The depression in the freezing point of the solvent for $0.03 \, mol \, kg^{-1}$ solution of $K_2SO_4$ is .............. $K$ (Assume complete dissociation of the electrolyte).

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