Why is it necessary to remove `CO` when ammonia is obtained by Haber's process?

Explanation

To answer the question of why it is necessary to remove carbon monoxide (CO) when ammonia is obtained by the Haber process, we can break down the explanation into several steps:

### Step-by-Step Solution:

1. **Understanding the Haber Process**:
The Haber process is a method used to synthesize ammonia (NH₃) from nitrogen (N₂) and hydrogen (H₂) gases. The balanced chemical equation for this reaction is:
\[
N_2(g) + 3H_2(g) \rightarrow 2NH_3(g)
...