9 Na2O2 + FeS2 Na2FeO4 + 6 Na2O + 2 Na2SO4

This is an oxidation-reduction (redox) reaction:

2 S-I - 14 e- 2 SVI (oxidation)

18 O-I + 18 e- 18 O-II (reduction)

FeII - 4 e- FeVI (oxidation)

FeS2 is a reducing agent, Na2O2 is an oxidizing agent, FeS2 is a reducing agent.

Reactants:

  • Na2O2
    • Names: Sodium peroxide source: wikipedia, accessed: 2019-09-28source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Disodium dioxide source: wikipedia, accessed: 2019-09-28, Flocool source: wikipedia, accessed: 2019-09-28
    • Appearance: Yellow to white powder source: wikipedia, accessed: 2019-09-28; Yellow-to-white powder source: ICSC, accessed: 2019-09-04
  • FeS2
    • Names: Ferrous disulfide source: wikidata, accessed: 2019-09-02, Fool's gold source: wikidata, accessed: 2019-09-02, Iron disulfide source: wikidata, accessed: 2019-09-02

Products:

  • Na2FeO4
  • Na2OSodium oxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04
    • Other names: Disodium oxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Sodium monoxide source: ICSC, accessed: 2019-09-04, Disodium monoxide source: ICSC, accessed: 2019-09-04
    • Appearance: White solid source: wikipedia, accessed: 2019-09-27; White lumps or powder source: ICSC, accessed: 2019-09-04
  • Na2SO4
    • Names: Sodium sulfate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Sodium sulphate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Sulfate of sodium source: wikipedia, accessed: 2019-09-27
    • Appearance: White crystalline solid | hygroscopic source: wikipedia, accessed: 2019-09-27; White hygroscopic solid in various forms source: ICSC, accessed: 2019-09-04