Science
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?
Acids Bases Salts
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Answer
Metal carbonates react with dil HCl to produce metals chloride and carbon dioxide gas. As the products formed in the above reaction are carbon dioxide and calcium chloride, hence the reaction is as follows :
CaCO3 + 2HCl [dil.] ⟶ CaCl2 + CO2 ↑ + H2O
Therefore, the metal A is calcium carbonate [CaCO3].
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