Give a scheme of reactions which involve disproportionation of the oxides of nitrogen

Explanation

To address the question regarding the disproportionation of nitrogen oxides, we will outline a scheme of reactions that illustrate this phenomenon. Disproportionation reactions involve a single substance being both oxidized and reduced simultaneously. In the case of nitrogen oxides, we can consider the following reactions:

### Step-by-Step Solution:

1. **Identify Nitrogen Oxides**: The primary nitrogen oxides that undergo disproportionation are nitrogen dioxide (NO2) and dinitrogen tetroxide (N2O4).

2. **Reaction of Nitrogen Dioxide (NO2)**:
- The first reaction involves nitrogen dioxide reacting with water:
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