A metal compound A reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle . Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride.

A metal compound A reacts with dilute hydrochloric acid to produce eff

1.	A metal compound A reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle . Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride.
Answer» Solution :The GAS the extinguishes a burning candle is carbon DIOXIDE. It is formed by the action of dilute hydrochloric acid on metal carbonate or metal hydrogencarbonate and produces effervescence . Since one of the COMPOUNDS formed is calcium chloride, this shows that the metal compound is calcium carbonate. It cannotbe calcium hydrogencarbonate because calcium hydrogencarbonate is found in solution . Thus , the metal compound A is calcium carbonate `(CaCO_3)` . Calcium carbonate reacts with dilute hydrochloric acid to form calcium chloride. carbon dioxide and water . `CaCO_(3)(s)+2HCl(aq) rarrCaCl_(2)(aq)+CO_(2)(G)+H_(2)O(l)`