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General Principles And Processes Of Isolation Of Elements

Question
CBSEENCH12011155
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In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with

  • Copper (I) sulphide (Cu2S)

  • sulphur dioxide (SO2)

  • Iron sulphide (FeS)

  • Carbon monoxide (CO)

Solution

A.

Copper (I) sulphide (Cu2S)

In the extraction of copper from its sulphide ore, when ore is subjected to roasting, some of it is oxidised to Cu2O which reacts with the remaining Cu2S (sulphide ore) to give copper metal.
Cu2S +2Cu2O → 6Cu +SO2 ↑
In this process, Cu2S behaves as reducing agent. 

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