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How does the gas formed when sodium hydrogen carbonate reacts with an acid help food rise?

Answer and explanation

Correct answer: Gas bubbles make the mixture rise and become soft

The governing concept is gas evolution and expansion in a food mixture. Sodium hydrogen carbonate reacts with an acid to release carbon dioxide, for example NaHCO3 + H+ → Na+ + H2O + CO2. During heating, the carbon dioxide forms and expands as many small bubbles trapped in the batter or dough. These bubbles increase the volume and create a lighter, softer texture, so option A is correct.

Related tags

Baking SodaCarbon DioxideFood RisingAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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