Question

metal compound a reacts with dilute hydrochloric acid to produce effervescence the gas evolved extinguishes a burning candle. name the gas produced and how will you test the presence of that gas

Answer 1

Answer:

When calcium carbonate reacts with hydrochloric acid, it produces carbon dioxide gas with effervescence. Carbon dioxide used as fire extinguisher. Hence, it extinguishes a burning candle. Therefore, the metal compound A is calcium carbonate.