3 (As)3+ + BrO3- + 6 H3O+ → 3 (As)5+ + 9 H2O + (Br)-

This is an oxidation-reduction (redox) reaction:

BrV + 6 e- → Br-I (reduction)

3 AsIII - 6 e- → 3 AsV (oxidation)

BrO3- is an oxidizing agent, As3+ is a reducing agent.

Reactants:

  • As3+
  • BrO3-
  • H3O+
    • Names: Hydronium source: wikidata, accessed: 2019-09-07, Hydroxonium source: wikidata, accessed: 2019-09-07, H3O(+) source: wikidata, accessed: 2019-09-07

Products:

  • As5+
  • H2O – Water, oxidane source: wikipedia, accessed: 2019-09-27
    • Other names: Water (H2O) source: wikipedia, accessed: 2019-09-27, Hydrogen hydroxide (HH or HOH) source: wikipedia, accessed: 2019-09-27, Hydrogen oxide source: wikipedia, accessed: 2019-09-27
    • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas source: wikipedia, accessed: 2019-09-27
  • Br-