Question

Which of the following substances does not undergo hydrolysis in aqueous solution?

• A. Sodium acetate
• B. Ammonium chloride
• C. Sodium carbonate
• D. Sodium chloride

Hint:

For hydrolysis of salts: - Salts formed from a strong acid and a strong base do not undergo hydrolysis. - Salts formed from a weak acid and a strong base undergo hydrolysis to give a basic solution. - Salts formed from a strong acid and a weak base undergo hydrolysis to give an acidic solution.

Answer 1

The Correct Option is D

Hydrolysis occurs when a salt reacts with water to form either acidic or basic solutions. 
- Sodium acetate (\( \text{CH}_3\text{COONa} \)) is a basic salt formed from a strong base (NaOH) and a weak acid (acetic acid). It undergoes hydrolysis to form a basic solution. 
- Ammonium chloride (\( \text{NH}_4\text{Cl} \)) is an acidic salt formed from a weak base ($NH_3$) and a strong acid (HCl). It undergoes hydrolysis to form an acidic solution. 
- Sodium carbonate (\( \text{Na}_2\text{CO}_3 \)) is a basic salt formed from a strong base (NaOH) and a weak acid (carbonic acid). It undergoes hydrolysis to form a basic solution. 
- Sodium chloride (\( \text{NaCl} \)) is a neutral salt formed from a strong base ($NaOH$) and a strong acid ($HCl$). It does not undergo hydrolysis because both ions ($Na^+$ and $Cl^{⁻}$) do not react with water.