How would you distinguish between baking powder and washing soda by heating ?

Explanation

To distinguish between baking powder and washing soda by heating, we can follow these steps:

### Step 1: Identify the Chemical Formulas
- **Baking Powder**: The chemical formula for baking powder is sodium bicarbonate (NaHCO₃).
- **Washing Soda**: The chemical formula for washing soda is sodium carbonate decahydrate (Na₂CO₃·10H₂O).

### Step 2: Heat the Baking Powder
- When baking powder (NaHCO₃) is heated, it decomposes to form:
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