Chemistry - Liquid Solution Question with Solution | TestHub

(i) Osmotic pressure$\text{π}=\text{i}\text{C}\text{R}\text{T}$

$\therefore$concentration is same so$\text{π}\propto \text{i}$(number of ions)

$\text{i}$for$\text{B}\text{a}\text{C}{\text{l}}_2=3,\text{K}\text{C}\text{l}=2,\text{C}{\text{H}}_3\text{C}\text{O}\text{O}\text{H}$$\le$$\text{1<}\text{i}\le 2$and for sucrose$=1$

So, order of osmotic pressure$\text{B}\text{a}\text{C}{\text{l}}_2>\text{K}\text{C}\text{l}>\text{C}{\text{H}}_3\text{C}\text{O}\text{O}\text{H}>\text{Sucrose}$
Acetic acid does not dissociate completely. Hence, its van't Hoff factor will be in between 1 and 2.

(ii) The extent of depression in freezing point varies with the number of solute particles for a fixed solvent only and it's a characteristic feature of the nature of solvent also$\Delta {\text{T}}_{\text{f}}={\text{k}}_{\text{f}}\times \text{m}$
For different solvents,value of${\text{k}}_{\text{f}}$is also different so, for two different solvents the extent of depression may vary even if same number of solute particles be dissolved in them.