Chemistry - Chemical Equilibrium Question with Solution | TestHub

Four moles of$\mathrm{P}\mathrm{C}{\mathrm{l}}_5$are heated in a closed$4 \mathrm{d}{\mathrm{m}}^3$container to reach equilibrium at 400 K. at equilibrium 50% of$\mathrm{P}\mathrm{C}{\mathrm{l}}_5$is dissociated. What is the value of${\text{K}}_{\text{c}}$in$\text{mol/L}$for the dissociation of$\mathrm{P}\mathrm{C}{\mathrm{l}}_5$into$\mathrm{P}\mathrm{C}{\mathrm{l}}_3$and$\mathrm{C}{\mathrm{l}}_2$at 400 K is