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What is the main solid product formed when baking soda is heated?

Answer and explanation

Correct answer: Sodium carbonate

Baking soda is sodium hydrogen carbonate, NaHCO₃. On heating, it undergoes thermal decomposition: 2NaHCO₃ → Na₂CO₃ + CO₂ + H₂O. Sodium carbonate is the solid residue, while carbon dioxide and water are gaseous or vapour products under the usual conditions. Hence option A is correct; the other choices are unrelated salts and are not formed in this decomposition.

Related tags

Baking SodaThermal DecompositionSodium CarbonateAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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