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Which main gaseous product is formed when baking soda is heated?

Answer and explanation

Correct answer: Carbon dioxide

Baking soda is sodium hydrogen carbonate, NaHCO₃. On heating, it decomposes according to the equation 2NaHCO₃ → Na₂CO₃ + H₂O + CO₂. The gaseous product asked for is therefore carbon dioxide, so option D is correct. The released carbon dioxide forms bubbles in dough and helps cakes or other baked foods become light and porous. Hydrogen, chlorine, and oxygen are not products of this decomposition.

Related tags

Baking-SodaThermal-DecompositionCarbon-DioxideClass10AcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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