Which of the following salts will not undergo hydrolysis in water?

Options

A. Sodium sulphate
B. Ammonium sulphate
C. Aluminimum sulphate
D. All the salts will hydrolyse

Explanation

To determine which of the given salts will not undergo hydrolysis in water, we need to analyze the nature of each salt based on the acids and bases from which they are derived. Here’s a step-by-step solution:

### Step 1: Understand Hydrolysis of Salts
Salts can undergo hydrolysis when they are formed from a weak acid or a weak base. Salts formed from strong acids and strong bases do not undergo hydrolysis.

### Step 2: Identify the Salts
We will evaluate each salt provided in the options to see if they are formed from strong acids and strong bases or from weak acids/bases.

### Step 3: Analyze Each Salt
1. **Sodium Sulfate (Na2SO4)**:
- Formed from Sodium Hydroxide (NaOH, a strong base) and Sulfuric Acid (H2SO4, a strong acid).
- Since both components are strong, Na2SO4 will not undergo hydrolysis.

2. **Ammonium Sulfate (NH4)2SO4**:
- Formed from Ammonium Hydroxide (NH4OH, a weak base) and Sulfuric Acid (H2SO4, a strong acid).
- Since it contains a weak base, it will undergo hydrolysis.

3. **Aluminum Sulfate (Al2(SO4)3)**:
- Formed from Aluminum Hydroxide (Al(OH)3, a weak base) and Sulfuric Acid (H2SO4, a strong acid).
- Since it contains a weak base, it will undergo hydrolysis.

### Step 4: Conclusion
From the analysis, only Sodium Sulfate (Na2SO4) is formed from a strong acid and a strong base, and therefore, it will not undergo hydrolysis in water.

### Final Answer:
**Sodium Sulfate (Na2SO4)** will not undergo hydrolysis in water.

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