What happens when (a) `ZnCO_(3)` is heated in the absence of oxygen? (b) a mixture of `Cu_(2)O" and "Cu_(2)S` is heated?

What happens when (a) `ZnCO_(3)` is heated in the absence of oxygen?

1.	What happens when (a) `ZnCO_(3)` is heated in the absence of oxygen? (b) a mixture of `Cu_(2)O" and "Cu_(2)S` is heated?
Answer» (a) A mixture of ZnO(s) and `CO_(2)` is formed `ZnCO_(3) overset("heat")rarrZnO(s) + CO_(2)(g)` (b) A mixture of copper and `SO_(2)` is formed. `2Cu_(2)O(s) + Cu_(2)S(s) overset("heat")rarr 6Cu(s) + SO_(2)(g)`.

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What happens when (a) `ZnCO_(3)` is heated in the absence of oxygen? (b) a mixture of `Cu_(2)O" and "Cu_(2)S` is heated?

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