2 FeS2 + 15 Na2O2 Fe2O3 + 4 Na2SO4 + 11 Na2O

This is an oxidation-reduction (redox) reaction:

4 S-I - 28 e- 4 SVI (oxidation)

2 FeII - 2 e- 2 FeIII (oxidation)

30 O-I + 30 e- 30 O-II (reduction)

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

Reactants:

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

Products:

  • Fe2O3Iron(III) oxide source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-07
    • Other names: Ferric oxide source: wikipedia, accessed on: 2019-09-27source: ICSC, accessed on: 2019-09-04source: wikidata, accessed on: 2019-09-07source: NIOSH NPG, accessed on: 2019-09-02, Hematite source: wikipedia, accessed on: 2019-09-27, Ferric iron source: wikipedia, accessed on: 2019-09-27
    • Appearance: Red-brown solid source: wikipedia, accessed on: 2019-09-27; Reddish brown-to-black crystals or powder source: ICSC, accessed on: 2019-09-04; Reddish-brown solid. [Note: Exposure to fume may occur during the arc-welding of iron.] source: NIOSH NPG, accessed on: 2019-09-02; A fine, red powder of ferric oxide. [Note: Usually used in cake form or impregnated in paper or cloth.] source: NIOSH NPG, accessed on: 2019-09-02
  • Na2SO4
    • Names: Sodium sulfate source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04, Sodium sulphate source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02, Sulfate of sodium source: wikipedia, accessed on: 2019-09-27
    • Appearance: White crystalline solid | hygroscopic source: wikipedia, accessed on: 2019-09-27; White hygroscopic solid in various forms source: ICSC, accessed on: 2019-09-04
  • Na2OSodium oxide source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04
    • Other names: Disodium oxide source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04, Sodium monoxide source: ICSC, accessed on: 2019-09-04, Disodium monoxide source: ICSC, accessed on: 2019-09-04
    • Appearance: White solid source: wikipedia, accessed on: 2019-09-27; White lumps or powder source: ICSC, accessed on: 2019-09-04