2In2(SO4)3 + 6H2O ± 12e- → 4In + 3O2 + 6H2SO4
Electrolysis aqueous solution indium(III) sulfate to produce indium, oxygen and sulfuric acid.
- Cathodic process: 4In3+ + 12e- → 4In
- Anodic process: 6H2O - 12e- → 3O2 + 12H+