Which product is not formed when baking soda is heated?
Answer and explanation
Correct answer: Sodium chloride
The governing concept is thermal decomposition of sodium hydrogen carbonate, commonly called baking soda. On heating, two formula units decompose as: 2NaHCO₃ → Na₂CO₃ + CO₂ + H₂O. Thus sodium carbonate, carbon dioxide, and water are formed. Sodium chloride requires a chloride source and does not appear in this reaction, so it is not a product. Therefore option D is correct; the other three are explicitly present in the equation.
Frequently asked questions
What is the correct answer to this question?
Sodium chloride
Why is this the correct answer?
The governing concept is thermal decomposition of sodium hydrogen carbonate, commonly called baking soda. On heating, two formula units decompose as: 2NaHCO₃ → Na₂CO₃ + CO₂ + H₂O. Thus sodium carbonate, carbon dioxide, and water are formed. Sodium chloride requires a chloride source and does not appear in this reaction, so it is not a product. Therefore option D is correct; the other three are explicitly present in the equation.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
