2 KMnO4 (aq) + 5 K2SO3 (aq) + 6 KHSO4 (aq) → 3 H2O (l) + 9 K2SO4 (aq) + 2 MnSO4 (aq)

This is an oxidation-reduction (redox) reaction:

2 MnVII + 10 e- → 2 MnII (reduction)

5 SIV - 10 e- → 5 SVI (oxidation)

KMnO4 is an oxidizing agent, K2SO3 is a reducing agent.

Reactants:

  • KMnO4 – Potassium manganate(VII) source: wikipedia, accessed: 2019-09-27
    • Other names: Potassium permanganate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Chameleon mineral source: wikipedia, accessed: 2019-09-27, Condy's crystals source: wikipedia, accessed: 2019-09-27
    • Appearance: Purplish-bronze-gray needles | magenta–rose in solution source: wikipedia, accessed: 2019-09-27; Dark purple crystals source: ICSC, accessed: 2019-09-04
  • K2SO3 – Potassium sulfite source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: E225 source: wikipedia, accessed: 2019-09-27, Potassium sulphite source: wikidata, accessed: 2019-09-02
    • Appearance: White solid source: wikipedia, accessed: 2019-09-27
  • KHSO4 – Potassium hydrogen sulfate source: wikipedia, accessed: 2019-09-27source: ICSC, accessed: 2019-09-04
    • Other names: Potassium bisulfate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Potassium acid sulfate source: wikipedia, accessed: 2019-09-27source: ICSC, accessed: 2019-09-04, Potassium Hydrogen Sulphate source: wikidata, accessed: 2019-09-02
    • Appearance: Colorless solid source: wikipedia, accessed: 2019-09-27; Colourless-to-white hygroscopic crystals or crystalline powder source: ICSC, accessed: 2019-09-04

Products:

  • 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
  • K2SO4
    • Names: Potassium sulfate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Potassium sulphate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Dipotassium sulfate source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04
    • Appearance: White solid source: wikipedia, accessed: 2019-09-27; Colourless-to-white crystals source: ICSC, accessed: 2019-09-04
  • MnSO4 – Manganese(II) sulfate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Other names: MnSO4 source: wikidata, accessed: 2019-09-02, Manganese sulfate anhydrous source: wikidata, accessed: 2019-09-02, Manganese sulphate source: wikidata, accessed: 2019-09-02
    • Appearance: White crystals (anhydrous) | pale pink solid (hydrates) source: wikipedia, accessed: 2019-09-27