Phosphorous pent chloride gives an equilibrium mixture of PCl5, PCl3and Cl2when heated.PCl5(g)PCl3(g) + Cl2(g)
A 1.00-L vessel contains an unknown amount of PCl5and 0.020 mol each of PCl3and Cl2 at equilibrium at 250 0C. Calculate the moles of PCl5 in the vessel if Kc for this reaction is 0.0415 at 250 0C.