Question

a metal compound X reacts with dilute H2 S o4 to produce effervescence. the gas evolved extinguishes a burning candle. if one of the compound formed is calcium sulphate then what is the X and the gas evolved? also write the balanced equation.​

Answer 1

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Compound X = Calcium carbonate

Gas evolved = Carbon dioxide

Balanced chemical eqn

$\small{\bf \: CaCO_3 + H_2SO_4\rightarrow \: CaSO_4+ CO_2+H_2O }$