What happens when ammonia gas is passed into a solution of sodium cobaltinitrite ?

Explanation

To solve the question of what happens when ammonia gas is passed into a solution of sodium cobaltinitrite, we will break down the process step-by-step.

### Step-by-Step Solution:

1. **Identify the Reactants**:
- Sodium cobaltinitrite is represented as \( Na_3[Co(NO_2)_6] \). It contains cobalt in a +3 oxidation state and nitrite ions (\( NO_2^- \)).
- Ammonia gas (\( NH_3 \)) is passed into the solution.

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