5 S2O82- + 2 (Mn)2+ + 8 H2O → 10 SO42- + 2 MnO4- + 16 H+

This is an oxidation-reduction (redox) reaction:

2 MnII - 10 e- → 2 MnVII (oxidation)

10 SVII + 10 e- → 10 SVI (reduction)

Mn2+ is a reducing agent, S2O82- is an oxidizing agent.

Reactants:

  • S2O82-
  • Mn2+
  • 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

Products:

  • SO42- – Sulfate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-07
    • Other names: Sulfate ion source: wikidata, accessed: 2019-09-07, Sulphate ion source: wikidata, accessed: 2019-09-07, Sulphate source: wikidata, accessed: 2019-09-07
  • MnO4-
  • H+