The catalyst and promoter used in the manufacture of ammonia by Haber's process is

Options

A. `V_(2)O_(5), Fe`
B. `Fe, Mo`
C. `Ni, Pt`
D. `Fe, Co`

Answer

To answer the question about the catalyst and promoter used in the manufacture of ammonia by Haber’s process, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Haber’s Process**:
- The Haber process is a method for synthesizing ammonia (NH₃) from nitrogen (N₂) and hydrogen (H₂) gases. This reaction is typically conducted under high pressure and temperature.

2. **Identifying the Catalyst**:
- In the Haber process, a catalyst is required to increase the rate of the reaction. The catalyst used is **finely divided iron**. This form of iron provides a large surface area for the reaction to occur, facilitating the combination of nitrogen and hydrogen.

3. **Identifying the Promoter**:
- A promoter is a substance that enhances the effectiveness of a catalyst. In the case of the Haber process, **molybdenum** is used as a promoter. It helps improve the activity of the iron catalyst, making the reaction more efficient.

4. **Conclusion**:
- Therefore, the correct answer to the question is that the catalyst and promoter used in the manufacture of ammonia by Haber’s process are **iron (catalyst)** and **molybdenum (promoter)**.

### Final Answer:
The catalyst and promoter used in the manufacture of ammonia by Haber’s process are **iron (catalyst)** and **molybdenum (promoter)**.

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