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Which gas is released when a carbonate reacts with an acid?

Answer and explanation

Correct answer: Carbon dioxide

The governing reaction pattern is acid plus carbonate producing salt, water, and carbon dioxide. For example, a carbonate reacts with hydrochloric acid according to carbonate + acid → salt + H₂O + CO₂. Therefore option A is correct. The released carbon dioxide can be passed through limewater, which turns milky. Hydrogen is associated with many metal-acid reactions, while oxygen and ammonia are not general products here.

Related tags

Acids Bases SaltsCarbonate ReactionCarbon DioxideLimewaterClass 10 ScienceAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And Behaviour

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