GKFix MCQ Question

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

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