Question

A metal compound ‘X’ reacts with dil. H2SO4 to produce effervescence, The gas evolved extinguishes a burning candle. If one of the compound formed is calcium sulphate, then what is ‘X’ and the gas evolved? Also, write a balanced chemical equation for the reaction which occurred.
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Answer 1

Answer:

x is calcium and gas evolved is so2

Answer 2

Answer:

x is CaCO3

gas evolved is CO2

Explanation:

CaCO3 + H2SO4 ----> CaSO4 + CO2 + H2O