Find the value of Kp and Kc for the reaction PCl5 -> PCl3 + Cl2 if at equilibrium 2 moles of each reagent is present in a 10 L flask.
a) Kp = 100, Kc = 100
b) Kp = 200, Kc = 100
c) Kp = 400, Kc = 200
d) Kp = 400, Kc = 400