Brønsted–Lowry acid–base equilibria in aqueous solution

Acids dissolve in water to give solutions of pH<7: acidity occurs as due to aqueous hydronium ions, H3O+ (aq). Basic solutions contain aqueous hydroxide ions, OH− (aq). Acids neutralise bases. A Brønsted-Lowry acid is a proton donor. A Brønsted-Lowry base is a proton acceptor. Conjugate acid-base pairs are related by the transfer of a proton. Hydrolysis of an acid or base produces a conjugate