Formation of metallic copper from the sulphid | vedclass

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Question

(B) In the commercial extraction of copper from copper glance $(Cu_2S)$,the ore is partially roasted to form copper$(I)$ oxide $(Cu_2O)$: $2Cu_2S + 3O

Vedclass · Accepted Answer

$Cu_2S + \frac{3}{2} O_2 	o Cu_2O + SO_2; 2Cu_2O + Cu_2S 	o 6Cu + SO_2$

Vedclass · Answer

(B) In the commercial extraction of copper from copper glance $(Cu_2S)$,the ore is partially roasted to form copper$(I)$ oxide $(Cu_2O)$: $2Cu_2S + 3O_2 	o 2Cu_2O + 2SO_2$ This is followed by self-reduction (autoreduction) where the remaining $Cu_2S$ reacts with the $Cu_2O$ formed to produce metallic copper: $2Cu_2O + Cu_2S 	o 6Cu + SO_2$ Copper is not reduced by carbon or carbon monoxide in this process because copper has a lower affinity for oxygen compared to carbon at these temperatures.

Formation of metallic copper from the sulphide ore in the commercial metallurgical process involves:

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