Question

Name the gas evolved when dilute hydrochloric acid reacts with sodium hydrogencarbonate. How is it recognised?

Answer 1

I think Carbon dioxide gas is evolved

Answer 2

HEY MATE,
NaHCO3 +HCl---------------------> NaCL + CO2 +H2O
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CO2 is produced
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it is recognized by passing it through lime water the lime water turns milky 
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this confirms the presence of carbon dioxide
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