Which of the following statements is/are correct? — Ionic Equilibrium Chemistry Question

💡 Solution & Explanation

(A) A standard buffer is composed of a weak acid and its conjugate base. (B) Resisting pH changes upon small additions of acid or base is the definition of a buffer. (C) Ammonium acetate provides the acetate ion (conjugate base), and mixing it with acetic acid forms a buffer mixture. (D) Potassium cyanide ($\text{KCN}$) is a basic salt; its $\text{CN}^-$ ion undergoes anionic hydrolysis to produce $\text{OH}^-$, thereby increasing the pH of water. Therefore, correct answer is A,B,C,D.