Question

Metal compound A react with dilute hydrochloric acid to produce effervescence the evolved extinguishes a burning candle write a balanced chemical equation for the reaction if one of the compound formed is calcium chloride.

Answer 1

the compound A is calcium carbonate.

this is because carbonates react with the acids to produce carbon-dioxide gas which extinguishes fire, and also the compound formed will me calcium chloride as follows:

CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂

Answer 2

Answer:-

As metal compound released is Calcium Chloride the gas evolved here is CO2. Hence metal A should be Calcium Carbonate. Hence the reaction between Calcium Carbonate and HCl is

CaCO3 (s) + 2HCl (Aq) → CaCl2( Aq) + CO2 (g) + H2O (l)

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