IO3- + 5 (Br)- + 6 H+ → 2 Br2 + IBr + 3 H2O

This is an oxidation-reduction (redox) reaction:

4 Br-I - 4 e- → 4 Br0 (oxidation)

IV + 4 e- → II (reduction)

Br- is a reducing agent, IO3- is an oxidizing agent.

Reactants:

  • IO3-
  • Br-
  • H+

Products:

  • 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
  • IBr – Iodine monobromide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: Iodine bromide source: wikipedia, accessed: 2019-09-27, IBr source: wikidata, accessed: 2019-09-02, BrI source: wikidata, accessed: 2019-09-02
    • Appearance: Dark red solid source: wikipedia, accessed: 2019-09-27
  • 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