Ca3P2 + 8 Cl2 + 8 H2O → 16 HCl + Ca3(PO4)2
This is an oxidation-reduction (redox) reaction:
2 P-III - 16 e- → 2 PV (oxidation)
16 Cl0 + 16 e- → 16 Cl-I (reduction)
Ca3P2 is a reducing agent, Cl2 is an oxidizing agent.
Reactants:
Products:
- 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.]
- Ca3(PO4)2 – Tricalcium bis(phosphate)