Chemistry - Liquid Solution Question with Solution | TestHub

Dissociation of salt ${\mathrm{A}}_2{\mathrm{B}}_3(\mathrm{aq})$ in water follows first order kinetics ${\mathrm{A}}_2{\mathrm{B}}_3(\mathrm{aq})\to 2{\mathrm{A}}^{3+}(\mathrm{aq})+3{\mathrm{B}}^{2-}(\mathrm{aq})$. Starting from $t=0$, a definite volume of solution is taken at definite instant and its osmotic rise is measured. If the osmotic rise was 2 mm at $\mathrm{t}=0$ and 6 mm at $\mathrm{t}=10\min$, then the value of $\frac{\mathrm{x}}{\mathrm{y}}$ is, where $\mathrm{x}=$ osmotic pressure of solution (in Pascal) at $\mathrm{t}=20$ minutes and $\mathrm{y}={\mathrm{t}}_{3/4}$ of the dissociation reaction (in min)

[Given: Density of final solution in each case = 1.0 g/ml, g = 10 m/s² ]