Import Question JSON

$\text{Relative lowering of vapor pressure is a colligative property and}$ $\text{colligative property depends only on the amount of solute.}$ $\frac{\Delta P}{P^o_{\text{solvent}}} = i X_{\text{solute}}$ $\Delta P = \text{Lowering of vapor pressure}$ $P^o_{\text{solvent}} = \text{Pure state pressure of solvent}$ $X_{\text{solute}} = \text{Mole fraction of solute}$ $i = \text{Van't hoff factor}$ $\text{From above we can say that}$ $\frac{\Delta P}{P^o_{\text{solvent}}} = \alpha i$ $\text{A. Urea} \rightarrow \text{non electrolyte, therefore, } i = 1$ $\text{B. NaCl} \rightarrow \text{electrolyte, therefore, } i = 2$ $\text{C. Sucrose} \rightarrow \text{non electrolyte, therefore, } i = 1$ $\text{D. CaCl}_2 \rightarrow \text{electrolyte, therefore, } i = 3$ $\text{Hence the CaCl}_2 \text{ solution will show maximum relative lowering in}$ $\text{vapor pressure.}$