Cu + O2 → CuO2 – Balanced equation

Or you want a quick look:

This is an oxidation-reduction (redox) reaction:

Cu - 4 e- CuIV (oxidation)

2 O + 4 e- 2 O-II (reduction)

Cu is a reducing agent, O2 is an oxidizing agent.

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  • Cu
    • Names: Copper , Copper (dusts and mists, as Cu) , Cu
    • Appearance: Solid in various forms. turns green on exposure to moist air ; Reddish, lustrous, malleable, odorless solid.
  • O2
    • Names: Dioxygen , Oxygen , Oxygen (liquefied)
    • Appearance: Odourless compressed gas ; Liquefied gas. colourless-to-blue extremely cold liquid


  • CuO2
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