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What is the main reason for adding an acidic substance to baking powder?

Answer and explanation

Correct answer: To make baking soda produce carbon dioxide

The governing concept is an acid–carbonate reaction. Baking powder contains sodium hydrogen carbonate and a mild edible acid. When the mixture becomes moist and is heated, the acid reacts with NaHCO₃ and releases carbon dioxide, for example: acid + NaHCO₃ → salt + H₂O + CO₂. The gas bubbles expand in the batter and make it rise. Thus option A is correct; the other choices do not describe this reaction.

Related tags

Baking PowderAcid-Base ReactionCarbon DioxideAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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