GKFix MCQ Question

Which of the following is an example of a physical equilibrium?

• A. N2(g) + 3H2(g) ⇌ 2NH3(g)
• B. H2O(l) ⇌ H2O(vap)
• C. CH3COOH ⇌ CH3COO⁻ + H⁺
• D. 2SO2(g) + O2(g) ⇌ 2SO3(g)