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A 5.0 L flask is filled with 0.25 mol SO3, 0.50 mol SO2, and 1.0 mol O2, and allowed to reach equilibrium. Assume the temperature of the mixture is chosen so that Kc = 0.12. Predict the effect on the concentration of SO3 as equilibrium is achieved by using Q, the reaction quotient.

2 SO3(g) <---> 2 SO2(g) + O2(g)

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