How is copper extracted from its sulphide ore? Explain the various steps supported by chemical equations. Draw labelled diagram for the electrolytic refining of copper.
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Sulphide ore of copper is heated in air.
2Cu2S + 3O2 → 2Cu2O + 2SO2
2Cu2O + Cu2S → 6Cu + SO2
Labelled diagram of electrolytic refining of copper
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Copper from Cu2S can be obtained from its ore simply by heating in air. (I) First step is the heating of sulphide ore of copper in the presence of an excess of air. This process is known as roasting. (II) The second step is the self-reduction of copper
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