2 HAuCl4 + 3 SnCl2 → 2 Au + 3 SnCl4 + 2 HCl
This is an oxidation-reduction (redox) reaction:
2 AuIII + 6 e- → 2 Au0 (reduction)
3 SnII - 6 e- → 3 SnIV (oxidation)
HAuCl4 is an oxidizing agent, SnCl2 is a reducing agent.
Reactants:
Products:
- Au
- SnCl4 – Tetrachlorostannane , Tin tetrachloride , Tin(IV) chloride
- 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.]