O2 (g) + 2 MnO (s) → 2 MnO2 (s)

This is an oxidation-reduction (redox) reaction:

2 MnII - 4 e- → 2 MnIV (oxidation)

2 O0 + 4 e- → 2 O-II (reduction)

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

Reactants:

  • 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
  • MnO – Manganese(II) oxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: Manganous oxide source: wikipedia, accessed: 2019-09-27, Manganosite source: wikipedia, accessed: 2019-09-27, Manganese monoxide source: wikipedia, accessed: 2019-09-27
    • Appearance: Green crystals or powder source: wikipedia, accessed: 2019-09-27

Products:

  • MnO2 – Manganese oxide source: wikipedia, accessed: 2019-09-27, Manganese(IV) oxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: Manganese dioxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Pyrolusite source: wikipedia, accessed: 2019-09-27, Hyperoxide of manganese source: wikipedia, accessed: 2019-09-27
    • Appearance: Brown-black solid source: wikipedia, accessed: 2019-09-27; Black-to-brown powder source: ICSC, accessed: 2019-09-04