The equilibrium constant, K, for the following reaction is 1.20x102 at 500 K. PCI,(9) PCI,(9) + Cl,(9) An equilibrium mixture of the three gases in a 1.00 L fask at 500 K contains 0.275 M PCI, 5.74x102 M PCI, and 5.74x102 M Clz. What will be the concentrations of the three gases once equilibrium has been reestablished, if 3.87x102 mol of Cly(g) is added to the flask? (PCls)-

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