Which of the following salt gets hydrolyzed in aqueous solution? A salt of

Options

A. weak acid and weak base
B. strong acid and weak base
C. weak acid and strong base
D. all of these

Answer

To determine which of the following salts gets hydrolyzed in aqueous solution, we need to understand the concept of hydrolysis and how different types of salts behave in water. Hydrolysis refers to the reaction of a salt with water to produce an acid and a base.

### Step-by-Step Solution:

1. **Identify the Types of Salts**:
- We need to analyze the different types of salts based on their origins:
- Salt of a weak acid and weak base.
- Salt of a strong acid and weak base.
- Salt of a weak acid and strong base.

2. **Salt of Weak Acid and Weak Base**:
- Example: Acetic acid (CH3COOH) and Ammonium hydroxide (NH4OH).
- When these react, they form a salt (NH4CH3COO) and water.
- In aqueous solution, this salt can hydrolyze back into the weak acid and weak base:
\[ NH4CH3COO + H2O \rightleftharpoons CH3COOH + NH4OH \]
- **Conclusion**: This salt gets hydrolyzed.

3. **Salt of Strong Acid and Weak Base**:
- Example: Hydrochloric acid (HCl) and Ammonium hydroxide (NH4OH).
- The reaction produces NH4Cl (salt) and water.
- In water, NH4Cl can hydrolyze to produce HCl and NH4OH:
\[ NH4Cl + H2O \rightleftharpoons HCl + NH4OH \]
- **Conclusion**: This salt also gets hydrolyzed.

4. **Salt of Weak Acid and Strong Base**:
- Example: Sodium acetate (CH3COONa) formed from acetic acid and sodium hydroxide.
- In aqueous solution, it can hydrolyze to produce CH3COOH and NaOH:
\[ CH3COONa + H2O \rightleftharpoons CH3COOH + NaOH \]
- **Conclusion**: This salt also gets hydrolyzed.

5. **Final Conclusion**:
- All the salts mentioned (weak acid-weak base, strong acid-weak base, weak acid-strong base) undergo hydrolysis in aqueous solution. Therefore, the correct answer is that all of these salts get hydrolyzed in aqueous solution.

### Answer:
All of the above salts get hydrolyzed in aqueous solution.