Chemistry - Chemical Equilibrium Question with Solution | TestHub

The equilibrium reaction$\mathrm{P}\mathrm{C}{\mathrm{l}}_5\left(\mathrm{s}\right)\rightleftharpoons \mathrm{P}\mathrm{C}{\mathrm{l}}_3\left(\mathrm{s}\right)+\mathrm{C}{\mathrm{l}}_2\left(\mathrm{g}\right)$is carried in a closed vessel. What is the effect on equilibrium concentration of$\mathrm{C}{\mathrm{l}}_2\left(\mathrm{g}\right)$by adding$\mathrm{P}\mathrm{C}{\mathrm{l}}_5$at constant temperature?