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Why does foam form when baking soda and vinegar are mixed?

Answer and explanation

Correct answer: Due to formation of carbon dioxide gas

Baking soda is sodium hydrogen carbonate, while vinegar contains acetic acid. When they react, the acid first forms carbonic acid, which quickly decomposes into carbon dioxide, water, and a salt: NaHCO₃ + acid → CO₂ + H₂O + salt. The escaping CO₂ bubbles become trapped in the liquid and produce foam. No hydrogen metal, frozen oxygen, or burning sodium chloride is involved.

Related tags

Baking SodaVinegarCarbon Dioxide ReactionAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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