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KCET2015ChemistryGeneral Principles and Processes of Isolation of Metals

Copper is extracted from Copper pyrites by heating in a Bessemer converter. The method is based on the principle that

Options

  1. ACopper has more affinity for oxygen than Sulphur at high temperature.
  2. BIron has less affinity for oxygen than Sulphur at high temperature.
  3. CCopper has less affinity for oxygen than Sulphur at high temperature.
  4. DSulphur has less affinity for oxygen at high temperature.

Correct answer

A. Copper has more affinity for oxygen than Sulphur at high temperature.

Step-by-step solution

The reactions involved in the extraction of copper from coper pyrites is [ array l 2 Cu ₂ ~S +3 O ₂ 2 Cu ₂ O +2 SO ₂ Cu ₂ ~S +2 Cu ₂ O 6 Cu + SO ₂ array ] Therefore, Cu has more affinity for oxygen than sulphur.

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