2 CuFeS2 + 4 O2 Cu2S + 2 FeO + 3 SO2

This is an oxidation-reduction (redox) reaction:

2 CuII + 2 e- 2 CuI (reduction)

3 S-II - 18 e- 3 SIV (oxidation)

8 O0 + 16 e- 8 O-II (reduction)

CuFeS2 is an oxidizing agent, CuFeS2 is a reducing agent, O2 is an oxidizing agent.

Reactants:

  • CuFeS2
  • O2
    • Names: Dioxygen source: wikidata, accessed on: 2019-09-07, Oxygen source: ICSC, accessed on: 2019-09-04source: wikidata, accessed on: 2019-09-07, Oxygen (liquefied) source: ICSC, accessed on: 2019-09-04
    • Appearance: Odourless compressed gas source: ICSC, accessed on: 2019-09-04; Liquefied gas. colourless-to-blue extremely cold liquid source: ICSC, accessed on: 2019-09-04

Products:

  • Cu2SCopper(I) Sulphide source: wikipedia, accessed on: 2019-09-27
    • Other names: Copper(I) sulfide source: wikipedia, accessed on: 2019-09-27, Cuprous sulfide source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02, Chalcocite source: wikipedia, accessed on: 2019-09-27
  • FeOIron(II) oxide source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02
    • Other names: Ferrous oxide source: wikipedia, accessed on: 2019-09-27source: ICSC, accessed on: 2019-09-04source: wikidata, accessed on: 2019-09-02, Iron monoxide source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02, Iron oxide source: wikidata, accessed on: 2019-09-02
    • Appearance: Black crystals source: wikipedia, accessed on: 2019-09-27; Black solid in various forms source: ICSC, accessed on: 2019-09-04
  • SO2Sulfur dioxide source: wikipedia, accessed on: 2019-09-28source: wikidata, accessed on: 2019-09-02source: NIOSH NPG, accessed on: 2019-09-02
    • Other names: Sulfurous anhydride source: wikipedia, accessed on: 2019-09-28source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04, Sulphur dioxide source: ICSC, accessed on: 2019-09-04source: wikidata, accessed on: 2019-09-02, Sulfurous acid anhydride source: wikidata, accessed on: 2019-09-02source: NIOSH NPG, accessed on: 2019-09-02
    • Appearance: Colorless gas source: wikipedia, accessed on: 2019-09-28; Colourless gas or compressed liquefied gas with pungent odour source: ICSC, accessed on: 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 on: 2019-09-02