3 Fe + 2 O2 → Fe3O4

This is an oxidation-reduction (redox) reaction:

3 Fe0 - 8 e- → 3 Fe8/3 (oxidation)

4 O0 + 8 e- → 4 O-II (reduction)

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

Reactants:

  • Fe
    • Names: Iron source: wikidata, accessed: 2019-09-07, Fe source: wikidata, accessed: 2019-09-07, Element 26 source: wikidata, accessed: 2019-09-07
  • O2
    • Names: Dioxygen source: wikidata, accessed: 2019-09-07, Oxygen source: ICSC, accessed: 2019-09-04source: wikidata, accessed: 2019-09-07, Oxygen (liquefied) source: ICSC, accessed: 2019-09-04
    • Appearance: Odourless compressed gas source: ICSC, accessed: 2019-09-04; Liquefied gas. colourless-to-blue extremely cold liquid source: ICSC, accessed: 2019-09-04

Products:

  • Fe3O4 – Iron(II) iron(III) oxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: Iron(II,III) oxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Ferrous ferric oxide source: wikipedia, accessed: 2019-09-27, Ferroso ferric oxide source: wikipedia, accessed: 2019-09-27
    • Appearance: Solid black powder source: wikipedia, accessed: 2019-09-27