Question

When sodium carbonate powder is treated with dilute hydrochloric acid.Carbon dioxide is evolved in above is then passed through limewater for a long time. State
observations and support by two balanced chemical equations.
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Answer 1

Well, HCl is an acid and it reacts with the metal carbonate Na2CO3 to give CO2 (carbon dioxide) , H2O and NaCl ( sodium chloride). ... Generally, acids react with metal carbonates to give out water, metal salt, and carbon dioxide.