In the extraction of copper from its sulphide | vedclass

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(C) In the extraction of copper from its sulphide ore,the metal is formed by the self-reduction of $Cu_2O$ with $Cu_2S$. First,the sulphide ore is roa

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$Cu_2S$

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(C) In the extraction of copper from its sulphide ore,the metal is formed by the self-reduction of $Cu_2O$ with $Cu_2S$. First,the sulphide ore is roasted in air to convert a portion of it into copper$(I)$ oxide: $2 Cu_2S + 3 O_2 \rightarrow 2 Cu_2O + 2 SO_2$. Then,the remaining copper$(I)$ sulphide reacts with the copper$(I)$ oxide produced to form metallic copper: $2 Cu_2O + Cu_2S \rightarrow 6 Cu + SO_2$. This process is known as auto-reduction or self-reduction.

In the extraction of copper from its sulphide ore,the metal is formed by the reduction of $Cu_2O$ with:

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