1. The process of producing chlorine by oxidation of hydrogen chloride can be represented by the equation
4HCl O2↔2H2O 2Cl2. From the initial mixture containing 1 mol of HCl and 0.5 mol of oxygen, 0.4 mol of chlorine is formed. Calculate the equilibrium constants (Kp and Kc) if the total pressure in the system is 105 Pa and the temperature is 660 K.

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