(A) In the extraction of copper,the metal is formed in the Bessemer converter due to a process known as self-reduction (or auto-reduction).In this pro

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$Cu_2S + 2Cu_2O \to 6Cu + SO_2$

(A) In the extraction of copper,the metal is formed in the Bessemer converter due to a process known as self-reduction (or auto-reduction).In this process,copper$(I)$ sulfide reacts with copper$(I)$ oxide to produce metallic copper and sulfur dioxide gas.The balanced chemical equation is: $Cu_2S + 2Cu_2O \to 6Cu + SO_2$.