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.
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When calcium carbonate reacts with hydrochloric acid, the calcium and chloride combines to form calcium carbonate which releases carbon dioxide as by-product. When a container is filled with carbon dioxide, we cannot light the candle in the container
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Answer:
Metal compound A should be a compound of Ca as a calcium salt is formed in the product. We know that CO2 extinguishes a burning candle. Also, since carbon dioxide is liberated, therefore, it must be a carbonate. Hence, it is calcium carbonate.
The equation envolved is:
CaCO3 (S) + 2HCl (aq) CaCl2 (S) + CO2 (g) + H2O (l)
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