Consider the following decomposition reaction: 2SO3(g) = 2SO2(g) + O2(g) When 12.0 mol of SO3 is placed in a 10.0-L container and allowed to attain equilibrium, 3.C mol of SO2 is present. i) What are the equilibrium concentrations of SO2, O2 and SO3? ii) Calculate the equilibrium constant for the reaction. iii) Does the equilibrium favor products or reactants?

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