2.5 g of an impure sample of sodium bicarbonate when heated strongly gave 300 ml of carbon dioxide measured at `27^(@)`C and 760 mm pressure. Calculate the percentage purity of the sample

Explanation

To calculate the percentage purity of the sodium bicarbonate sample, we will follow these steps:

### Step 1: Write the decomposition reaction of sodium bicarbonate
When sodium bicarbonate (NaHCO₃) is heated, it decomposes to form sodium carbonate (Na₂CO₃), water (H₂O), and carbon dioxide (CO₂). The balanced chemical equation is:

\[ 2 \text{NaHCO}_3 (s) \rightarrow \text{Na}_2\text{CO}_3 (s) + \text{H}_2\text{O} (g) + \text{CO}_2 (g) \]

### Step 2: Calculate the moles of carbon dioxide produced
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