4 HCl (aq) + 2 MnO2 (s) → 2 H2O (l) + O2 (g) + 2 MnCl2 (aq)
This is an oxidation-reduction (redox) reaction:
2 MnIV + 4 e- → 2 MnII (reduction)
2 O-II - 4 e- → 2 O0 (oxidation)
MnO2 is an oxidizing agent, MnO2 is a reducing agent.
Reactants:
- 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.]
- MnO2 – Manganese oxide , Manganese(IV) oxide
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