1.

Metal compound A reacts with dilute hydrochloric acid to producecilervescence. The gas evolved extinguishes a burning candle Write abalanced chemical equation for the reaction if one of the compoundsformed is calcium chloride.

Answer»

because metal is lees reactive from hydrogen

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.

CaCO3+ 2HCl ⇨ CaCl2+ CO2+ H2O



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