PbO2 + 2 HCl → Cl2 + PbO + H2O
This is an oxidation-reduction (redox) reaction:
PbIV + 2 e- → PbII (reduction)
2 Cl-I - 2 e- → 2 Cl0 (oxidation)
PbO2 is an oxidizing agent, HCl is a reducing agent.
Reactants:
- PbO2 – Lead(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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