How will you distinguish between urea and glycine ?

Explanation

To distinguish between urea and glycine, we can perform a chemical test using sodium nitrite (NaNO2) and hydrochloric acid (HCl). Here’s the step-by-step solution:

### Step 1: Understand the Chemical Structures
- **Urea** has the chemical formula \( \text{NH}_2\text{C(=O)NH}_2 \).
- **Glycine** has the chemical formula \( \text{NH}_2\text{C(=O)CH}_2\text{COOH} \).

### Step 2: Prepare the Reagents
- Prepare a solution of sodium nitrite (NaNO2) and hydrochloric acid (HCl). This mixture will generate nitrous acid (HNO2) in situ.
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