$$\begin{gathered} \mathrm{For} \mathrm{the} \mathrm{reaction} {\mathrm{PCl}}_{5\left(\mathrm{g}\right)}\stackrel{ }{\rightleftharpoons }{\mathrm{PCl}}_{3\left(\mathrm{g}\right)}+{\mathrm{Cl}}_{2\left(\mathrm{g}\right)} , \\ \mathrm{equilibrium} \mathrm{mixture} \mathrm{contained} 2 \mathrm{moles} \mathrm{each} \mathrm{of} {\mathrm{PCl}}_{\mathrm{5}} , {\mathrm{PCl}}_{\mathrm{3}} \mathrm{and} {\mathrm{Cl}}_{\mathrm{2}} . \\ \mathrm{If} \mathrm{the} \mathrm{equilibrium} \mathrm{pressure} \mathrm{is} 6 \mathrm{atm}. \mathrm{What} \mathrm{is} \mathrm{the} \mathrm{value} \mathrm{of} \mathrm{Kp}? \end{gathered}$$