GKFix MCQ Question

Which of the following reactions has a positive ΔS?

• A. H₂O(g) → H₂O(l)
• B. CaO(s) + CO₂(g) → CaCO₃(s)
• C. 2H₂O(l) → 2H₂(g) + O₂(g)
• D. N₂(g) + 3H₂(g) → 2NH₃(g)