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Copper(II) Oxide by Heating Copper in Air
Copper heated in air at about 300–800 °C combines with oxygen to form black copper(II) oxide: 2 Cu + O₂ → 2 CuO. Industry makes most copper oxide while extracting copper from its ores, but heating the metal is the direct route. The oxide is the starting point for copper salts such as copper sulfate.
Beginner
Half a day
Instructions
1
1
Heat the copper
Heat the copper
Heat thin copper in air at about 300–800 °C. Oxygen from the air combines with it: 2 Cu + O₂ → 2 CuO.
Materials for this step:
Copper Sheet1 as requiredTools needed:
Kiln2
2
Collect the oxide
Collect the oxide
Let it cool and collect the black copper(II) oxide.
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