3 K2MnO4 + 3 SnCl2 + 8 H3PO4 → 2 K3PO4 + Mn3(PO4)2 + Sn3(PO4)4 + 3 Cl2 + 12 H2O

This is an oxidation-reduction (redox) reaction:

3 MnVI + 12 e- → 3 MnII (reduction)

6 Cl-I - 6 e- → 6 Cl0 (oxidation)

3 SnII - 6 e- → 3 SnIV (oxidation)

K2MnO4 is an oxidizing agent, SnCl2 is a reducing agent, SnCl2 is a reducing agent.

Reactants:

  • K2MnO4 – Potassium manganate(VI) source: wikipedia, accessed: 2019-09-27
    • Other names: Potassium manganate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02
    • Appearance: Green crystals (darkening with time) source: wikipedia, accessed: 2019-09-27
  • SnCl2 – Tin(II) chloride source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Tin dichloride source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04
    • Other names: Stannous chloride source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04, Tin salt source: wikipedia, accessed: 2019-09-27, Tin protochloride source: wikipedia, accessed: 2019-09-27source: ICSC, accessed: 2019-09-04
    • Appearance: White crystalline solid source: wikipedia, accessed: 2019-09-27; Colourless or white crystals source: ICSC, accessed: 2019-09-04
  • H3PO4
    • Names: Phosphoric acid source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Orthophosphoric acid source: wikidata, accessed: 2019-09-02source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Phosphoric(V) acid source: wikidata, accessed: 2019-09-02
    • Appearance: Hygroscopic colourless crystals source: ICSC, accessed: 2019-09-04; Thick, colorless, odorless, crystalline solid. [Note: Often used in an aqueous solution.] source: NIOSH NPG, accessed: 2019-09-02

Products:

  • K3PO4 – Potassium phosphate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Potassium tetraoxidophosphate(3−) source: wikipedia, accessed: 2019-09-27
    • Other names: Tripotassium phosphate source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Tribasic source: wikipedia, accessed: 2019-09-27, Tribasic potassium phosphate source: wikidata, accessed: 2019-09-02
    • Appearance: White deliquescent powder source: wikipedia, accessed: 2019-09-27
  • Mn3(PO4)2 – Manganese (II) Phosphate source: wikipedia, accessed: 2019-09-27
    • Other names: Manganese(II) phosphate source: wikipedia, accessed: 2019-09-27, Manganese diphosphate; Manganese phosphate tribasic source: wikipedia, accessed: 2019-09-27
  • Sn3(PO4)4
  • Cl2
    • Names: Chlorine source: ICSC, accessed: 2019-09-04source: NIOSH NPG, accessed: 2019-09-02, Molecular chlorine source: NIOSH NPG, accessed: 2019-09-02
    • Appearance: Greenish-yellow compressed liquefied gas with pungent odour source: ICSC, accessed: 2019-09-04; Greenish-yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.] source: NIOSH NPG, accessed: 2019-09-02
  • 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