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Explain giving equation, what happens when:(a) ZnCO3 is heated in the absence of air?
(b) a mixture of Cu2O and Cu2S is heated?
(a) When zinc carbonate is heated strongly in the absence of air, zinc oxide and carbon dioxide is produced.
$ZnCO_3(s) → ZnO(s) + CO_2$
(b) When a mixture of Cu2O and Cu2S is heated, copper metal and sulphur dioxide are formed.
$2Cu_2O(s) + Cu_2S → 6Cu(s) + SO_2(g)$
Updated on: 10-Oct-2022
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