Extraction Of Copper
Mediumchemistry
In copper extraction, blister copper is produced by removing:
Select the correct option:
Solution
Incorrect! Answer:
Sulfur as SO2
- Stage: Bessemerization.
- Feed: Molten 'matte' (Cu2S+FeS).
- The Process: Air is blown through the converter. Sulfur present as sulfide is oxidized to Sulfur dioxide (SO2) gas.
- Self-Reduction: 2Cu2O+Cu2S→6Cu+SO2↑.
- The Name: As the molten copper solidifies, the SO2 gas trapped inside escapes, creating bubbles or 'blisters' on the surface of the metal.
- Result: This Blister Copper is about 98% pure and is subsequently refined by electrolysis.
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About This Question
- Subject
- chemistry
- Chapter
- d- and f-block elements
- Topic
- extraction of copper
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
Sulfur as SO2
- Stage: Bessemerization.
- Feed: Molten 'matte' (Cu2S+FeS).
- The Process: Air is blown through the converter. Sulfur present as sulfide is oxidized to Sulfur dioxide (SO2) gas.
- Self-Reduction: 2Cu2O+Cu2S→6Cu+SO2↑.
- The Name: As the molten copper solidifies, the SO2 gas trapped inside escapes, creating bubbles or 'blisters' on the surface of the metal.
- Result: This Blister Copper is about 98% pure and is subsequently refined by electrolysis.
This medium difficulty chemistry question is from the chapter d- and f-block elements, covering the topic of extraction of copper. It appeared in the 2025 exam.
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