Question

A 2.5 L flask is filled with 0.25 mol SO3, 0.20 mol SO2, and 0.40 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)
A.[SO3] will decrease because Q > K.
B.[SO3] will decrease because Q < K.
C.[SO3] will increase because Q < K.
D.[SO3] will increase because Q > K.
E.[SO3] will remain the same because Q = K.

Answer

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