75.0 g of PCl5(g) is introduced into a 3.00 L vessel containing 10.0 g of Cl2(g), and the system is allowed
to reach equilibrium at 250ºC. PCl5(g) → PCl3(g) + Cl2(g)
If Kp = 1.80 for this reaction, what is the total pressure inside the vessel at equilibrium?
