Prepare ethanol from ethylamine and formaldehyde.

Explanation

To prepare ethanol from ethylamine and formaldehyde, we can follow these steps:

### Step 1: Convert Ethylamine to Diazonium Salt
1. **Starting Material**: Ethylamine (C2H5NH2).
2. **Reagents**: Treat ethylamine with sodium nitrite (NaNO2) in the presence of hydrochloric acid (HCl).
3. **Reaction**: This reaction will convert ethylamine into ethyl diazonium chloride (C2H5N2+Cl-).

**Chemical Equation**:
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