Explain giving equation, what happens when:

(a) ZnC03 is heated in the absence of air?


(b) a mixture of Cu2O and Cu2S is heated?

(a) When zinc carbonate heated in absence of air, it releases carbon di oxide gas and forms zinc oxide. We can see through equation as well.

ZnCO3→ ZnO + CO2


(b) 2Cu2O + Cu2S → 6Cu + SO2


Hence we can say that when a mixture of Cu2O and Cu2S is heated, carbon and Sulphur di oxide gas released.


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