10 P2I4 + 13 P4 + 128 H2O → 40 PH4I + 32 H3PO4

This is an oxidation-reduction (redox) reaction:

20 PII + 100 e- → 20 P-III (reduction)

20 PII - 60 e- → 20 PV (oxidation)

40 P0 + 120 e- → 40 P-III (reduction)

32 P0 - 160 e- → 32 PV (oxidation)

P2I4 is an oxidizing agent, P2I4 is a reducing agent, P4 is an oxidizing agent, P4 is a reducing agent.

Reactants:

  • P2I4 – Diphosphorus tetraiodide source: wikipedia, accessed: 2019-09-27source: wikidata, accessed: 2019-09-02, Tetraiododiphosphane source: wikipedia, accessed: 2019-09-27
    • Other names: Phosphorus(II) iodide source: wikipedia, accessed: 2019-09-27
    • Appearance: Orange crystalline solid source: wikipedia, accessed: 2019-09-27
  • P4
  • 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:

  • PH4I
  • 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