Question

An aqueous solution of which of the following salt is acidic is nature?

• A. Sodium chloride
• B. Sodium acetate
• C. Potassium nitrate
• D. Ammonium chloride

Answer 1

The correct option is D Ammonium chloride

${NH}_{4}Cl+H_{2}O\to {NH}_{4}OH+H^{+}+{Cl}^{-}$. The $HCl$ acid makes it slightly acidic in nature. A 5% by weight solution of ammonium chloride in water has $pH$ in the range of 4.6-6.0. It confirms its mild acidic nature.