Which of the following statement(s) is/are incorrect? — Ionic Equilibrium Chemistry Question

💡 Solution & Explanation

(A) is correct because $\text{CN}^-$ hydrolyzes as a conjugate base. (B) is correct because KCl is the salt of a strong acid and strong base, showing no hydrolysis. (D) is correct because $\text{CO}_3^{2-}$ hydrolyzes $\text{NH}_4^+$ to form free $\text{NH}_3$. (C) is incorrect because the hydrolysis of sodium acetate ($\text{CH}_3\text{COO}^- + \text{H}_2\text{O} \rightleftharpoons \text{CH}_3\text{COOH} + \text{OH}^-$) generates hydroxide ions ($\text{OH}^-$), which results in a basic (alkaline) solution, not an acidic solution. Therefore, correct answer is C.