Predict in which case, the degree of hydrolysis is independent of the concentration of the salt.
KCl, `CH_3COONa , NH_4Cl , CH_3COONH_4`

Explanation

To determine in which case the degree of hydrolysis is independent of the concentration of the salt, we need to analyze the given salts: KCl, CH₃COONa, NH₄Cl, and CH₃COONH₄.

### Step-by-Step Solution:

1. **Understanding Hydrolysis**:
Hydrolysis is the reaction of a salt with water, leading to the formation of an acid and a base. The degree of hydrolysis can depend on the nature of the salt (strong or weak acid/base) and its concentration.

2. **Analyzing KCl**:
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