7 O2 + 2 MoS2 → 4 SO2 + 2 MoO3

This is an oxidation-reduction (redox) reaction:

2 MoIV - 4 e- → 2 MoVI (oxidation)

4 S-II - 24 e- → 4 SIV (oxidation)

14 O0 + 28 e- → 14 O-II (reduction)

MoS2 is a reducing agent, MoS2 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
  • MoS2 – Molybdenum disulfide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: Molybdenum(IV) sulfide source: wikipedia, accessed: 2019-09-27, [MoS2] source: wikidata, accessed: 2019-09-02, Molybdenum disulphide source: wikidata, accessed: 2019-09-02
    • Appearance: Black/lead-gray solid source: wikipedia, accessed: 2019-09-27

Products:

  • SO2 – Sulfur dioxide source: wikipedia, accessed: 2019-09-28source: wikidata, accessed: 2019-09-02source: NIOSH NPG, accessed: 2019-09-02
    • Other names: Sulfurous anhydride source: wikipedia, accessed: 2019-09-28source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Sulphur dioxide source: ICSC, accessed: 2019-09-04source: wikidata, accessed: 2019-09-02, Sulfurous acid anhydride source: wikidata, accessed: 2019-09-02source: NIOSH NPG, accessed: 2019-09-02
    • Appearance: Colorless gas source: wikipedia, accessed: 2019-09-28; Colourless gas or compressed liquefied gas with pungent odour source: ICSC, accessed: 2019-09-04; Colorless gas with a characteristic, irritating, pungent odor. [Note: A liquid below 14°F. Shipped as a liquefied compressed gas.] source: NIOSH NPG, accessed: 2019-09-02
  • MoO3 – Molybdenum trioxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: Molybdic anhydride source: wikipedia, accessed: 2019-09-27, Molybdite source: wikipedia, accessed: 2019-09-27, Molybdic trioxide source: wikipedia, accessed: 2019-09-27
    • Appearance: Yellow or light blue solid source: wikipedia, accessed: 2019-09-27