The salt hydrolysis of the salt of strong acid and weak base is called

Options

A. Anionic hydrolysis
B. Cationic hydrolysis
C. Amphoteric hydrolysis
D. None

Explanation

To solve the question regarding the salt hydrolysis of the salt of a strong acid and a weak base, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Components**:
- A salt formed from a strong acid and a weak base is what we are dealing with. For example, consider the salt ammonium chloride (NH4Cl), which is formed from hydrochloric acid (HCl) and ammonium hydroxide (NH4OH).

2. **Understand Hydrolysis**:
- Hydrolysis is the reaction of a salt with water, leading to the formation of an acidic or basic solution. In this case, we focus on the salt of a strong acid and a weak base.

3. **Determine the Nature of the Hydrolysis**:
- The hydrolysis of NH4Cl involves the cation (NH4+) from the weak base reacting with water. This can be represented as:
\[ NH_4^+ + H_2O \rightleftharpoons NH_3 + H_3O^+ \]
- Here, NH4+ donates a proton (H+) to water, forming NH3 and H3O+.

4. **Analyze the Resulting Solution**:
- The production of H3O+ ions indicates that the solution will be acidic. This is because the presence of H3O+ ions increases the acidity of the solution.

5. **Conclusion**:
- The hydrolysis of a salt formed from a strong acid and a weak base is referred to as **cationic hydrolysis**. This is because the cation from the weak base (NH4+) is responsible for the acidic nature of the solution.

### Final Answer:
The salt hydrolysis of the salt of a strong acid and weak base is called **cationic hydrolysis**.

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