5 Cl2O (g) + 4 P (s) + 11 H2O (l) → 4 H3PO4 (aq) + 10 HCl (aq)
This is an oxidation-reduction (redox) reaction:
4 P0 - 20 e- → 4 PV (oxidation)
10 ClI + 20 e- → 10 Cl-I (reduction)
P is a reducing agent, Cl2O is an oxidizing agent.
Reactants:
Products:
- H3PO4
- HCl – Chlorane , Hydrogen chloride
- Other names: Hydrochloric acid , M , Uriatic acid
- Appearance: Colorless, transparent liquid, fumes in air if concentrated ; Colorless gas ; Colourless compressed liquefied gas with pungent odour ; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]