CaOCl2 + 2 KI + 2 HCl → I2 + CaCl2 + 2 KCl + H2O
This is an oxidation-reduction (redox) reaction:
2 Cl0 + 2 e- → 2 Cl-I (reduction)
2 I-I - 2 e- → 2 I0 (oxidation)
CaOCl2 is an oxidizing agent, KI is a reducing agent.
Reactants:
- CaOCl2
- KI
- 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.]
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