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What is the main solid product formed on heating baking soda?

Answer and explanation

Correct answer: Sodium carbonate

On heating, baking soda, sodium hydrogen carbonate, undergoes thermal decomposition: 2NaHCO₃ → Na₂CO₃ + H₂O + CO₂. The principal solid residue is sodium carbonate, while water vapour and carbon dioxide are released. Sodium chloride, calcium carbonate, and ammonium chloride are not formed in this decomposition because their required ions are absent. Therefore, option A is correct.

Related tags

Baking SodaThermal DecompositionSodium CarbonateCarbon DioxideAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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