8 CrCl3 + 2 KCl + 7 H2O → 6 CrCl2 + K2Cr2O7 + 14 HCl
This is an oxidation-reduction (redox) reaction:
6 CrIII + 6 e- → 6 CrII (reduction)
2 CrIII - 6 e- → 2 CrVI (oxidation)
CrCl3 is both an oxidizing and a reducing agent (disproportionation (dismutation)).
Reactants:
Products:
- CrCl2 – Chromium(II) chloride
- K2Cr2O7 – Potassium dichromate(VI)
- 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.]