Name the gas that is released when ethyl amine is treated with nitrous acid .

Explanation

To determine the gas released when ethyl amine is treated with nitrous acid, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants**:
- Ethyl amine has the chemical formula C2H5NH2.
- Nitrous acid is represented as HNO2.

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