Describe the effect of :
additions of `H_2`

Explanation

To describe the effect of the addition of \( H_2 \) on an equilibrium reaction, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Equilibrium Reaction**:
Consider the equilibrium reaction:
\[
H_2(g) + CO(g) \rightleftharpoons CH_3OH(g)
...