Chemistry - Chemical Equilibrium Question with Solution | TestHub

$5\mathrm{mol}{\mathrm{PCl}}_5(\mathrm{g})$ and one mole ${\mathrm{N}}_2$ gas is placed in a closed vessel. At equilibrium $20\%$ of ${\mathrm{PCl}}_5(\mathrm{g})$ decomposes and total pressure in the container is found to be 1 atm . The ${\mathrm{K}}_{\mathrm{P}}$ for the reaction ${\mathrm{PCl}}_5(\mathrm{g})\rightleftharpoons {\mathrm{PCl}}_3(\mathrm{g})+{\mathrm{Cl}}_2(\mathrm{g})$ is