ZnS + 2 O2 → ZnO2 + SO2

This is an oxidation-reduction (redox) reaction:

S-II - 6 e- → SIV (oxidation)

ZnII - 2 e- → ZnIV (oxidation)

4 O0 + 8 e- → 4 O-II (reduction)

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

Reactants:

  • ZnS
    • Names: Zinc sulfide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Zincblende source: wikipedia, accessed: 2019-09-27, Wurtzite source: wikipedia, accessed: 2019-09-27
    • Appearance: White-to-yellow crystals or powder source: ICSC, accessed: 2019-09-04
  • 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:

  • ZnO2
    • Names: Zinc peroxide source: wikipedia, accessed: 2019-09-28source: wikidata, accessed: 2019-09-02, Zinc dioxide source: wikipedia, accessed: 2019-09-28, Zinc bioxide source: wikipedia, accessed: 2019-09-28
    • Appearance: White-yellowish powder source: wikipedia, accessed: 2019-09-28
  • 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