GKFix MCQ Question

Which expression was tested using equilibrium data in the H₂-I₂-HI system?

• A. [H₂][I₂]/[HI]
• B. [HI]/[H₂] + [I₂]
• C. [HI(g)]eq / ([H₂(g)]eq [I₂(g)]eq)
• D. [H₂] + [I₂]/[HI]