Which among the following salts is NOT hydrolysed in water?

Step-by-step solution

To identify which salt does not hydrolyze in water , consider the acid–base origins of each salt. Hydrolysis occurs when salt ions react with water, producing acidity or basicity; salts of strong acids and strong bases do not hydrolyze due to the weakness of their conjugate acid and base. For Na ₂ CO ₃ , derived from strong base NaOH and weak acid H ₂ CO ₃ , the carbonate ion hydrolyzes: CO ₃²⁻ + H ₂ O HCO ₃^- + OH ^- , resulting in a basic solution. NH ₄ CN , from weak base NH ₄ OH and weak acid HCN , undergoes hy