3 SiO2 + 4 BrF3 → 3 SiF4 + 2 Br2 + 3 O2

This is an oxidation-reduction (redox) reaction:

4 BrIII + 12 e- → 4 Br0 (reduction)

6 O-II - 12 e- → 6 O0 (oxidation)

BrF3 is an oxidizing agent, SiO2 is a reducing agent.

Reactants:

  • SiO2
    • BrF3
      • Names: Bromine trifluoride source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
      • Appearance: Straw-coloured liquid | hygroscopic source: wikipedia, accessed: 2019-09-27

    Products:

    • SiF4 – Tetrafluorosilane source: wikipedia, accessed: 2019-09-28source: ICSC, accessed: 2019-09-04, Silicon tetrafluoride source: wikipedia, accessed: 2019-09-28source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04
      • Other names: Silicon fluoride source: wikipedia, accessed: 2019-09-28source: ICSC, accessed: 2019-09-04, Fluoro acid air source: wikipedia, accessed: 2019-09-28, Perfluorosilane source: ICSC, accessed: 2019-09-04
      • Appearance: Colourless gas, fumes in moist air source: wikipedia, accessed: 2019-09-28; Colourless gas with pungent odour source: ICSC, accessed: 2019-09-04
    • Br2
      • Names: Bromine source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Molecular bromine source: NIOSH NPG, accessed: 2019-09-02
      • Appearance: Fuming red-to-brown liquid with pungent odour source: ICSC, accessed: 2019-09-04; Dark reddish-brown, fuming liquid with suffocating, irritating fumes. source: NIOSH NPG, accessed: 2019-09-02
    • 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