Name the gas evolved when dil. Hcl reacts with sodium carbonate. How is it recognised
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When dilute hydrochloric acid reacts with sodium hydrogen carbonate, Carbon dioxide gas is liberated .We recognize the presence of carbon dioxide by passing it through lime water which turns milky or a white precipitate of calcium carbonateis formed
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carbon dioxide gas
When dilute HCL reacts with sodium hydrogen carbonate ,then carbon dioxide gas is formed. To recognize the gas, we can see brisk effervescence of carbon dioxide gas or bubbles is seen.
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