3 SbCl3 + K2Cr2O7 + 5 H2O → 3 H3SbO4 + 2 CrCl3 + 2 KCl + HCl
This is an oxidation-reduction (redox) reaction:
3 SbIII - 6 e- → 3 SbV (oxidation)
2 CrVI + 6 e- → 2 CrIII (reduction)
SbCl3 is a reducing agent, K2Cr2O7 is an oxidizing agent.
Reactants:
- SbCl3 – Antimony trichloride , Trichlorostibane
- K2Cr2O7 – Potassium dichromate(VI)
- H2O – Water, oxidane
Products:
- H3SbO4
- CrCl3 – Chromium(III) chloride , Chromium trichloride
- KCl
- 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.]