GKFix MCQ Question

What is the correct expression for Qc for the reaction 2SO3(g) ⇌ 2SO2(g) + O2(g)?

• A. Qc = [SO3]^2 / ([SO2]^2[O2])
• B. Qc = [SO2]^2 / ([SO3]^2[O2])
• C. Qc = [O2] / ([SO3]^2[SO2]^2)
• D. Qc = ([SO2]^2[O2]) / [SO3]^2