Consider the following equilibrium system: PCI3(g)= =PC!3(g) + Cl2(g) A 10.00 L evacuated flask is filled with 0.4223 mol PCI5(g) at 297.8 K. The temperature is then raised to 504.1 K, where the decomposition of PCI5 gas place to an appreciable extent. When equilibrium is established, the total pressure in the flask is 2.509 atm. takes What is the value of the equilbrium constant in terms of concentrations, K., at 504.1 K? Ke

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