GKFix MCQ Question

How is Kp calculated for the reaction N₂O₄(g) ⇌ 2NO₂(g)?

• A. Kp = P_N₂O₄ / (P_NO₂)²
• B. Kp = P_NO₂ / P_N₂O₄
• C. Kp = (P_NO₂)² / P_N₂O₄
• D. Kp = 2P_NO₂ / P_N₂O₄