Conditions for the formation of `NH_(3)` in Haber's process are

Options

A. High temperature, low pressure
B. Optimum temperature, high pressure
C. High temperature, high pressure
D. Optimum temperature, low pressure

Answer

To determine the conditions for the formation of ammonia (NH₃) in the Haber process, we can follow these steps:

### Step 1: Understand the Haber Process
The Haber process is a method for synthesizing ammonia from nitrogen and hydrogen gases. The overall reaction is:
\[ N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g) \]

### Step 2: Identify the Required Conditions
The formation of ammonia in the Haber process requires specific conditions, which include:

1. **High Pressure**: The reaction is favored at high pressures. The optimal pressure range is between 200 to 400 atmospheres.

2. **High Temperature**: The reaction requires a high temperature to increase the rate of reaction and achieve a reasonable yield of ammonia. The optimal temperature is around 500 degrees Celsius.

3. **Catalyst**: The presence of a catalyst is crucial to speed up the reaction without being consumed. Iron (Fe) is commonly used as a catalyst in the Haber process.

4. **Promoter**: A promoter, such as molybdenum (Mo), is often added to enhance the activity of the catalyst.

### Step 3: Summarize the Conditions
Based on the above points, the conditions for the formation of ammonia in the Haber process can be summarized as follows:
- Pressure: 200 to 400 atm
- Temperature: Approximately 500 °C
- Catalyst: Iron (Fe)
- Promoter: Molybdenum (Mo)

### Final Answer
The conditions for the formation of NH₃ in the Haber process are:
- High pressure (200 to 400 atm)
- High temperature (approximately 500 °C)
- Use of iron as a catalyst and molybdenum as a promoter.

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