In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with:

  • Option 1)

    iron(II) sulphide

  • Option 2)

    carbon monoxide

  • Option 3)

    copper(I) sulphide

  • Option 4)

    sulphur dioxide

 

Answers (1)

As we learned in concept

Roasting -

It is heating of the ore in presence of air below its fusion temperature.

- wherein

2PbS +3O3 \rightarrow 2PbO + 2SO2

 

 When copper sulphide is subjected to roasting

Cu_{2}s\rightarrow Cu_{2}o+So_{2}

2Cu_{2}o+Cu_{2}s\rightarrow 6cu+So_{2}

Cu2s reduces Cu2o


Option 1)

iron(II) sulphide

Option is incorrect

Option 2)

carbon monoxide

Option is incorrect

Option 3)

copper(I) sulphide

Option is correct

Option 4)

sulphur dioxide

Option is incorrect

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