KEAM 2011 Physics and Chemistry Paper

Question : 119 of 120

Marks: +1, -0

Four moles of PCI5 are heated in a closed 4 dm3 container to reach equilibrium at 400 K. At equilibrium 50 % of PCl5 is dissociated. What is the value of Kc for the dissociation is PCl5 into PCl3 and Cl2 at 400K ?