The degree of hydrolysis of which of the following salt is independent of the following salt is independent of the concentration of salt solution?

Options

A. `CH_(3)COONa`
B. `CH_(3)COONH_(4)`
C. `NH_(4)Cl`
D. `NaCl`

Answer

To determine the degree of hydrolysis of salts and which one is independent of concentration, we need to analyze the nature of the salts provided in the options. The degree of hydrolysis is influenced by the strength of the acid and base from which the salt is derived.

### Step-by-Step Solution:

1. **Understand Hydrolysis**: Hydrolysis refers to the reaction of a salt with water, leading to the formation of an acidic or basic solution. The degree of hydrolysis (h) is defined as the fraction of the salt that undergoes hydrolysis.

2. **Identify the Nature of the Salts**:
- The degree of hydrolysis of a salt formed from a weak acid and a weak base is independent of the concentration of the salt solution.
- Conversely, the degree of hydrolysis of salts formed from strong acids or strong bases is dependent on the concentration of the solution.

3. **Analyze the Given Options**:
- **Option 1: CH3COONH4 (Ammonium Acetate)**:
- Formed from a weak acid (acetic acid, CH3COOH) and a weak base (ammonium hydroxide, NH4OH).
- The degree of hydrolysis is independent of concentration.

- **Option 2: CH3COONa (Sodium Acetate)**:
- Formed from a weak acid (acetic acid) and a strong base (sodium hydroxide, NaOH).
- The degree of hydrolysis is dependent on concentration.

- **Option 3: NH4Cl (Ammonium Chloride)**:
- Formed from a weak base (ammonium hydroxide) and a strong acid (hydrochloric acid, HCl).
- The degree of hydrolysis is dependent on concentration.

- **Option 4: NaCl (Sodium Chloride)**:
- Formed from a strong base (sodium hydroxide) and a strong acid (hydrochloric acid).
- The degree of hydrolysis is dependent on concentration.

4. **Conclusion**: The only salt whose degree of hydrolysis is independent of concentration is **CH3COONH4 (Ammonium Acetate)**.

### Final Answer:
The degree of hydrolysis of **CH3COONH4 (Ammonium Acetate)** is independent of the concentration of the salt solution.