Question

1 .Metal componend A 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 formedis calcium chloride.

Answer 1

Explanation:

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.

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Answer 2

Answer:

Metal compound A= CaCO3

Gas evolved will be=CO2

When calcium carbonate reacts with hydrochloric acid, the gas so produced is carbon dioxide gas carbon dioxide is also used as a fire extinguisher. Hence, it extinguishes the burning candle. Therefore the metal

compound A is calcium carbonate.The balance chemical equation for the reaction if one of the compound formed is calcium chloride will -

CACO3 + 2HCL ---- CACl2 + CO2 + H2O

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