A substance X used as an antacid reacts with hydrochloric acid to produce a gas Y which is used in extinguishing fire.

(i) Name the substance X and gas Y.

(ii) Write a balanced equation of the reaction between X and hydrochloric acid.

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1 Answers

(i) X- Sodium hydrogen carbonate or baking soda.

Y-CO2

(ii) NaHCO3+HCl → NaCl+H2O+CO2

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