GKFix MCQ Question

What is the correct expression for the acid dissociation equilibrium of a weak acid HA?

• A. HA(aq) + H2O(l) → H3O+(aq) + A–(aq)
• B. HA(aq) + H2O(l) ↔ H3O+(aq) + A–(aq)
• C. HA(aq) + H2O(l) → H2O2(aq) + A–(aq)
• D. HA(aq) + H2O(l) ↔ H2O + A–(aq)