The pH at which water is maximum dissociated at 25°C, is — Ionic Equilibrium Chemistry Question

💡 Solution & Explanation

At 25°C, the ionic product of water is Kw = [H+][OH-] = 1.0 × 10^-14. Any addition of acid (H+) or base (OH-) suppresses the dissociation of water due to the common ion effect. Therefore, water is maximum dissociated when no external acid or base is added, i.e., in pure neutral water where pH = 7.