Zusammenfassung der Ressource
Chromium [Cr2O7]2-
- Orange Solution
- <-----Acid
Alkali----->
- [CrO4]2-
- Yellow Solution
- <-----H2O2
- [Cr(OH)6]3-
- Green
Solution
- XS NaOH----->
- Cr(H2O)3(OH)3
- Green
Precipitate
- Zn + HCl
OR Fe2+
acidified
with HCl
- [Cr(H2O)6]3+
- Green
Solution
- XS NH3
- [Cr(NH3)6]3+
- Purple Solution
- <-----O2
Zinc and
HCl----->
- [Cr(H2O)6]2+
- Blue Solution
- Limited NaOH/NH3
- ------->