Science — AI-generated practice question

Baking soda is sodium hydrogencarbonate (NaHCO₃). It is prepared from sodium chloride (common salt) by the following reaction:

$$\text{NaCl} + \text{H}_2\text{O} + \text{CO}_2 + \text{NH}_3 \rightarrow \text{NH}_4\text{Cl} + \text{NaHCO}_3$$

The reactants are sodium chloride, water, carbon dioxide, and ammonia. The products formed are ammonium chloride and sodium hydrogencarbonate (baking soda).

Source: Chapter 2, Section 2.4.3 – Chemicals from Common Salt

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• Equation is essential for both marks — writing it correctly (balanced, with correct formulae) fetches full credit.
• Name the product: Examiners expect you to identify NaHCO₃ as sodium hydrogencarbonate/baking soda.
• Do not confuse this with the equation for washing soda or the chlor-alkali process — both involve NaCl but give different products.
• Writing the names of reactants/products below the equation (as done in the textbook) is good practice and shows understanding.