GKFix MCQ Question

How is the mole fraction of NO₂ calculated when N₂O₄ is 50% dissociated?

• A. x_NO₂ = 0.5 / (1 + 0.5)
• B. x_NO₂ = 2 × 0.5 / (1 – 0.5 + 2 × 0.5)
• C. x_NO₂ = 0.5 / (1 – 0.5 + 0.5)
• D. x_NO₂ = 2 × 0.5 / (1 + 0.5)