What is the main solid product formed on heating baking soda?
Answer and explanation
Correct answer: Sodium carbonate
Baking soda is sodium hydrogen carbonate, NaHCO₃. On heating, it undergoes thermal decomposition: 2NaHCO₃ → Na₂CO₃ + CO₂ + H₂O. The principal solid product is sodium carbonate, while carbon dioxide and water are gaseous products under the usual conditions. Hence option A is correct; the other salts do not result from this decomposition.
Frequently asked questions
What is the correct answer to this question?
Sodium carbonate
Why is this the correct answer?
Baking soda is sodium hydrogen carbonate, NaHCO₃. On heating, it undergoes thermal decomposition: 2NaHCO₃ → Na₂CO₃ + CO₂ + H₂O. The principal solid product is sodium carbonate, while carbon dioxide and water are gaseous products under the usual conditions. Hence option A is correct; the other salts do not result from this decomposition.
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.
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