Write the balanced chemical equation for the following:
Sodium nitrite is produced by the reaction of the oxides of nitrogen in which nitrogen shows valency 2 and 4 in a solution of sodium carbonate.

Explanation

To write the balanced chemical equation for the production of sodium nitrite from the reaction of nitrogen oxides with sodium carbonate, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**:
- The reactants in this reaction are sodium carbonate (Na2CO3) and the oxides of nitrogen, specifically nitrogen monoxide (NO) and nitrogen dioxide (NO2).

2. **Write the Unbalanced Equation**:
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