Preparation and Reactions
Cu2S can be prepared by heating copper strongly in sulfur vapour or H2S. The reaction of copper powder in molten sulfur rapidly produces Cu2S, whereas pellets of copper require much higher temperature Cu2S reacts with oxygen to form SO2:
- 2 Cu2S + 3 O2 → 2 Cu2O + 2 SO2
In the production of copper two thirds of the molten copper sulfide is oxidised as above, and the Cu2O reacts with unoxidised Cu2S to give Cu metal:
- Cu2S + 2 Cu2O → 6 Cu + SO2
Read more about this topic: Copper(I) Sulfide
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