Which metal compound reacts with dilute hydrochloric acid to produce the gas evolved extinguishes a burning candle?
Numa HussainMaster
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The metal compound that reacts with dilute hydrochloric acid to produce a gas that can extinguish a burning candle is calcium carbonate (CaCO3). When calcium carbonate reacts with dilute hydrochloric acid (HCl), it produces calcium chloride (CaCl2), water (H2O), and carbon dioxide gas (CO2). The carbon dioxide gas can extinguish a burning candle because it displaces oxygen and reduces the oxygen concentration in the vicinity of the flame, leading to the extinguishing of the flame. Here’s the balanced chemical equation for the reaction:
CaCO3 + 2HCl -> CaCl2 + H2O + CO2
So, in this reaction, it’s the carbon dioxide (CO2) gas evolved that can extinguish a burning candle.