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For the following reaction at 600. K, the equilibrium constant, Kp, is 11.5. PCl5(g) equilibrium reaction arrow PCl3(g) + Cl2(g) Suppose that 2.550 g of PCl5 is placed in an evacuated 580. mL bulb, which is then heated to 600. K. What would be the pressure of PCl5 if it did not dissociate?