GKFix MCQ Question

What is the correct expression for Qc for the reaction 2HBr(g) ⇌ H2(g) + Br2(g)?

• A. Qc = [HBr]^2 / ([H2][Br2])
• B. Qc = [H2] / ([HBr]^2[Br2])
• C. Qc = [Br2] / ([HBr]^2[H2])
• D. Qc = ([H2][Br2]) / [HBr]^2