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Copper Sulfide Divided

Preparation and reactions . Cu 2 S can be prepared by heating copper strongly in sulfur vapour or H 2 S. The reaction of copper powder in molten sulfur rapidly produces Cu 2 S whereas pellets of copper require much higher temperature. Cu 2 S reacts with oxygen to form SO 2. 2 Cu 2 S 3 O 2 2 Cu 2 O 2 SO 2.

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