what will your observations on heating copper oxide with charcoal ( write the reaction also )
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CuO(s) + C(s) → Cu(s) + CO2(g) and PbO(s) + C(s) → Pb(s) + CO2(g).
copper should be obvious from its colour. The lead may be less obvious; it may appear as globules or as grey powder.
The reactions confirm the place of carbon in the reactivity series, above lead and copper, as it reduces the metal oxides to the metals and is itself oxidised to carbon dioxide:
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