Question

Hydronium ions are not produced in the aqueous solution of

• A. sulphuric acid
• B. nitric acid
• C. vinegar
• D. caustic soda

Answer 1

The correct option is D caustic soda

Caustic soda is the common name for NaOH, which is a strong base. Acids and bases release $H^{+}andO{H}^{-}$ ions respectively in their aqueous solution. The $H^{+}$ ions upon reaction with water form $H_3{O}^{+}$ ions (Hydronium ions). Sulphuric acid, vinegar and nitric acid produce hydronium ions in solution whereas caustic soda produces hydroxide ions.