GKFix MCQ Question

What is the correct equilibrium expression for the reaction: N2(g) + 3H2(g) ⇌ 2NH3(g)?

• A. K = [N2][H2]³ / [NH3]²
• B. K = [NH3] / ([N2][H2])
• C. K = [NH3]² / ([N2][H2]³)
• D. K = [NH3]³ / ([N2]²[H2])