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A metal compound A reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle.(a) Name the gas that extinguishes a burning candle.(b) Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride |
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Answer» (a) CO2 (b) A must be a metal carbonate. CaCO3(s) + 2HCl → CaCl2(s) + H2O(l) + CO2↑ |
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