Fe₂(SO₄)₃ + 3 Cu₂O → Fe₂O₃ + 3 Cu₂SO₄

This is an oxidation-reduction (redox) reaction:

Cu₂O is a reducing agent, Fe₂(SO₄)₃ is an oxidizing agent.

Reactants:

• Fe₂(SO₄)₃ – Iron(III) sulfate
  • Other names: Ferric sulfate , Sulfuric acid , Iron(3+) salt (3:2) ... show moreDiiron tris(sulphate) , Iron tersulfate , Iron sesquisulfate , Iron persulfate , Ferric tersulfate , Ferric sesquisulfate , Ferric persulfate , Diiron trisulfate , Iron(III) sulfate(VI) , Ferric sulfate anhydrous show less
  • Appearance: Grayish-white crystals
• Cu₂O – Copper(I) oxide
  • Other names: Cuprous oxide , Dicopper oxide , Cuprite ... show moreRed copper oxide , Copper (i) oxide , Copper (I) oxide show less
  • Appearance: Brownish-red solid ; Yellow, red or brown crystalline powder

Products:

• Fe₂O₃ – Iron(III) oxide
  • Other names: Ferric oxide , Hematite , Ferric iron ... show moreRed iron oxide , Rouge , Maghemite , Colcothar , Iron sesquioxide , Rust , Ochre , Iron oxide dust and fume (as Fe) , Iron oxide red , Red oxide , Anhydrous ferric oxide , Iron (III) oxide , Diiron trioxide , Iron trioxide , Ferric sesquioxide , Iron(III) oxide [Iron oxide dust and fume (as Fe)] , Iron(III)oxide [Rouge] show less
  • Appearance: Red-brown solid ; Reddish brown-to-black crystals or powder ; Reddish-brown solid. [Note: Exposure to fume may occur during the arc-welding of iron.] ; A fine, red powder of ferric oxide. [Note: Usually used in cake form or impregnated in paper or cloth.]
• Cu₂SO₄
  • Names: Copper(I) sulfate , Copper(I) sulphate; Cuprous sulfate; Dicopper sulfate
  • Appearance: Light Green