3 Mn3O4 (s) + 8 Al (s) → 9 Mn (s) + 4 Al2O3 (s)

This is an oxidation-reduction (redox) reaction:

9 Mn8/3 + 24 e- → 9 Mn0 (reduction)

8 Al0 - 24 e- → 8 AlIII (oxidation)

Mn3O4 is an oxidizing agent, Al is a reducing agent.

Reactants:

  • Mn3O4 – Manganese(II) dimanganese(III) oxide source: wikipedia, accessed: 2019-09-27
    • Other names: Manganese(II,III) oxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Manganese tetroxide; Manganese oxide source: wikipedia, accessed: 2019-09-27, Manganomanganic oxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02
    • Appearance: Brownish-black powder source: wikipedia, accessed: 2019-09-27; Brown-to-black crystalline powder source: ICSC, accessed: 2019-09-04; Brownish-black powder. [Note: Fumes are generated whenever manganese oxides are heated strongly in air.] source: NIOSH NPG, accessed: 2019-09-02
  • Al
    • Names: Aluminum source: wikidata, accessed: 2019-09-07source: NIOSH NPG, accessed: 2019-09-02, Aluminium powder source: ICSC, accessed: 2019-09-04, Al source: wikidata, accessed: 2019-09-07
    • Appearance: Silvery-white-to-grey powder source: ICSC, accessed: 2019-09-04; Silvery-white, malleable, ductile, odorless metal. source: NIOSH NPG, accessed: 2019-09-02

Products:

  • Mn
    • Names: Manganese source: wikidata, accessed: 2019-09-07source: ICSC, accessed: 2019-09-04, Mn source: wikidata, accessed: 2019-09-07, Element 25 source: wikidata, accessed: 2019-09-07
    • Appearance: Grey-white powder source: ICSC, accessed: 2019-09-04
  • Al2O3
    • Names: Aluminium oxide (Aluminum oxide) source: wikipedia, accessed: 2019-09-27, Aluminum oxide source: wikidata, accessed: 2019-09-02, Aluminium oxide source: ICSC, accessed: 2019-09-04source: wikidata, accessed: 2019-09-02
    • Appearance: White solid source: wikipedia, accessed: 2019-09-27; White powder source: ICSC, accessed: 2019-09-04; White, odorless, crystalline powder. source: NIOSH NPG, accessed: 2019-09-02