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Why does adding baking powder make a cake rise?

Answer and explanation

Correct answer: Carbon dioxide is released on heating

Baking powder contains sodium hydrogen carbonate and a mild edible acid. When the mixture is moistened and heated, the acid reacts with the hydrogen carbonate and produces carbon dioxide gas. The gas expands and forms bubbles trapped in the batter, making the cake rise and become porous. Oxygen does not change into water, sodium metal is not formed, and nitrogen is not responsible for the expansion.

Related tags

Baking PowderCarbon DioxideAcid-Base ReactionFood ChemistryAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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