Chemistry - Liquid Solution Question with Solution | TestHub

$\alpha =0.5$ (50\% dissociated) The reaction involves isTotal moles at equilibrium $=1-\alpha +4\alpha +\alpha$ $\text{ Total }=1+4\alpha$ $\therefore$ van't Hoff factor $(i)=\frac{1+4\alpha }{1}=1+4\times 0.5=3$ Osmotic pressure, $\pi =iCRT$ $\begin{array}{rl}C& =0.1\mathrm{M}=10^2\mathrm{mol}{\mathrm{m}}^{-3}\\ \pi & =3\times 10^2\times 8.314\times 300\\ & =7.483\times 10^5{\mathrm{Nm}}^{-2}\end{array}$ or $\pi =7.48\mathrm{atm}$