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What is the balanced chemical equation for the gas evolution reaction that occurs when calcium carbonate (CaCO3) reacts with hydrochloric acid (HCl)?

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The balanced chemical equation for the gas evolution reaction that occurs when calcium carbonate  CaCO3  reacts with hydrochloric acid  HCl  is:CaCO3  s  + 2 HCl  aq   CaCl2  aq  + H2O  l  + CO2  g

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