5 HClO4 + 4 H2O + 4 Br2 → 5 HCl + 8 HBrO3
This is an oxidation-reduction (redox) reaction:
8 Br0 - 40 e- → 8 BrV (oxidation)
5 ClVII + 40 e- → 5 Cl-I (reduction)
Br2 is a reducing agent, HClO4 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.]
- HBrO3 – Bromic acid