3 O2 + 4 B → 2 B2O3

This is an oxidation-reduction (redox) reaction:

4 B0 - 12 e- → 4 BIII (oxidation)

6 O0 + 12 e- → 6 O-II (reduction)

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

Reactants:

  • 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
  • B
    • Names: Boron source: wikidata, accessed: 2019-09-07, B source: wikidata, accessed: 2019-09-07, Element 5 source: wikidata, accessed: 2019-09-07, Boracium source: wikidata, accessed: 2019-09-07

Products:

  • B2O3
    • Names: Boron trioxide source: wikipedia, accessed: 2019-09-27source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Boron oxide source: wikipedia, accessed: 2019-09-27source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02source: wikidata, accessed: 2019-09-02, Diboron trioxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04
    • Appearance: White, glassy solid source: wikipedia, accessed: 2019-09-27; White hygroscopic powder or granules source: ICSC, accessed: 2019-09-04; Colorless, semitransparent lumps or hard, white, odorless crystals. source: NIOSH NPG, accessed: 2019-09-02