2 KMnO4 (aq) + KI (aq) + H2O (l) KIO3 (aq) + 2 MnO2 (s) + 2 KOH (aq)

This is an oxidation-reduction (redox) reaction:

2 MnVII + 6 e- 2 MnIV (reduction)

I-I - 6 e- IV (oxidation)

KMnO4 is an oxidizing agent, KI is a reducing agent.

Reactants:

  • KMnO4Potassium manganate(VII) source: wikipedia, accessed on: 2019-09-27
    • Other names: Potassium permanganate source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04, Chameleon mineral source: wikipedia, accessed on: 2019-09-27, Condy's crystals source: wikipedia, accessed on: 2019-09-27
    • Appearance: Purplish-bronze-gray needles | magenta–rose in solution source: wikipedia, accessed on: 2019-09-27; Dark purple crystals source: ICSC, accessed on: 2019-09-04
  • KI
    • Names: Potassium iodide source: wikidata, accessed on: 2019-09-02, KI source: wikidata, accessed on: 2019-09-02, Thyrosafe source: wikidata, accessed on: 2019-09-02
  • H2OWater, oxidane source: wikipedia, accessed on: 2019-09-27
    • Other names: Water (H2O) source: wikipedia, accessed on: 2019-09-27, Hydrogen hydroxide (HH or HOH) source: wikipedia, accessed on: 2019-09-27, Hydrogen oxide source: wikipedia, accessed on: 2019-09-27
    • Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas source: wikipedia, accessed on: 2019-09-27

Products:

  • KIO3Potassium iodate source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02
    • Other names: Iodic acid source: wikipedia, accessed on: 2019-09-27, Potassium salt source: wikipedia, accessed on: 2019-09-27, KIO3 source: wikidata, accessed on: 2019-09-02
    • Appearance: White crystalline powder source: wikipedia, accessed on: 2019-09-27
  • MnO2Manganese oxide source: wikipedia, accessed on: 2019-09-27, Manganese(IV) oxide source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02
    • Other names: Manganese dioxide source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04, Pyrolusite source: wikipedia, accessed on: 2019-09-27, Hyperoxide of manganese source: wikipedia, accessed on: 2019-09-27
    • Appearance: Brown-black solid source: wikipedia, accessed on: 2019-09-27; Black-to-brown powder source: ICSC, accessed on: 2019-09-04
  • KOHPotassium hydroxide source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04source: NIOSH NPG, accessed on: 2019-09-02
    • Other names: Caustic potash source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02source: ICSC, accessed on: 2019-09-04source: NIOSH NPG, accessed on: 2019-09-02, Lye source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02, Potash lye source: wikipedia, accessed on: 2019-09-27source: wikidata, accessed on: 2019-09-02
    • Appearance: White solid, deliquescent source: wikipedia, accessed on: 2019-09-27; White hygroscopic solid in various forms source: ICSC, accessed on: 2019-09-04; Odorless, white or slightly yellow lumps, rods, flakes, sticks, or pellets. [Note: May be used as an aqueous solution.] source: NIOSH NPG, accessed on: 2019-09-02