Question

name the gas evolved when HCL reacts with sodium hydrogen carbonate how is recognised​

Answer 1

Answer:Corbon dioxide

Equation:NaHCO3+HCl=NaCl+ H2O+CO2

Recognisation:Bring and burning candle near the gas liberating.The gas will estinguish the candle's flame and you will know its CO2

Answer 2

Answer:

Carbon dioxide

Explanation:

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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