2 KI (aq) + MnO2 (s) + 4 HCl (aq) → MnCl2 (aq) + I2 (s) + 2 KCl (aq) + 2 H2O (l)
This is an oxidation-reduction (redox) reaction:
MnIV + 2 e- → MnII (reduction)
2 I-I - 2 e- → 2 I0 (oxidation)
MnO2 is an oxidizing agent, KI is a reducing agent.
Reactants:
- KI
- MnO2 – Manganese oxide , Manganese(IV) oxide
- 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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