6 K + B2O3 3 K2O + 2 B

This is an oxidation-reduction (redox) reaction:

2 BIII + 6 e- 2 B0 (reduction)

6 K0 - 6 e- 6 KI (oxidation)

B2O3 is an oxidizing agent, K is a reducing agent.

Reactants:

  • K
    • Names: Potassium source: wikidata, accessed: 2019-09-07source: ICSC, accessed: 2019-09-04, K source: wikidata, accessed: 2019-09-07, Element 19 source: wikidata, accessed: 2019-09-07, Kalium source: wikidata, accessed: 2019-09-07source: ICSC, accessed: 2019-09-04
    • Appearance: White-to-grey lumps source: ICSC, accessed: 2019-09-04
  • 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

Products:

  • K2OPotassium oxide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Potassium oxidopotassium source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: Potash source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Dipotassium oxide source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Dipotassium monoxide source: wikidata, accessed: 2019-09-02
    • Appearance: Pale yellow solid source: wikipedia, accessed: 2019-09-27; Grey hygroscopic crystalline powder 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