Question

I) a metal compound A reacts with dilute hydrochloric acid to produce effervescence . the gas evolved extinguishes a burning candle . if one of the compound formed is calcium chloride then identify A and the gas evolved . also write a balanced equation for the reaction which occured . ii) write the balanced chemical equation for the action of granulated zinc with sodium hydroxide . name the products formed .

Answer 1

A is calcium carbonate

CaCO3+ 2HCl---- CaCl2 + CO2+H20