Which of the following salts will undergo hydrolysis to form an acidic solution (pH < 7)?
NaCl
CH₃COONa
NH₄Cl
K₂SO₄
📝 Detailed explanation
NH₄Cl is a salt of a strong acid (HCl) and a weak base (NH₃). The ammonium ion (NH₄⁺) reacts with water to release H⁺ ions, making the solution acidic.
