Chemistry - Chemical Equilibrium Question with Solution | TestHub

Initially, 0.8 mol of$\mathrm{P}\mathrm{C}{\mathrm{l}}_5$and 0.2 mol of$\mathrm{P}\mathrm{C}{\mathrm{l}}_3$are mixed in a one litre vessel. At equilibrium, 0.4 mol of$\mathrm{P}\mathrm{C}{\mathrm{l}}_3$is present. The value of${\mathrm{K}}_{\mathrm{c}}$for the reaction,$\mathrm{P}\mathrm{C}{\mathrm{l}}_5\left(\mathrm{g}\right)\rightleftharpoons \mathrm{P}\mathrm{C}{\mathrm{l}}_3\left(\mathrm{g}\right)+\mathrm{C}{\mathrm{l}}_2\left(\mathrm{g}\right),$would be