chem ap Aqueous Ion Colors
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| 83034566 | Cu1+ | Green | |
| 83034567 | Cu2+ | Blue | |
| 83034568 | Fe | Yellow to red-orange (depending on anion and charge of Fe); in rare cases, can form complex ion with a deep blue color | |
| 83034569 | Fe2+ | yellow-green (depending on the anion) | |
| 83034570 | Fe3+ | orange-red (depending on the anion) | |
| 83034571 | Co2+ | Pink | |
| 83034572 | Cr3+ | Violet (Cr(NO3)3) to Green (CrCl3) | |
| 83034573 | Ni2+ | Green | |
| 83034574 | Mn2+ | Pink | |
| 83034575 | Pb3+ | blue-green (Pb2+ and Pb4+ are colorless) | |
| 83034576 | V2+ | violet | |
| 83034577 | V3+ | blue-green | |
| 83034578 | Zn2+ | Colorless/milky | |
| 83034579 | MnO4- | Purple (Mn w/ +7 oxidation state is purple) | |
| 83034580 | CrO42- | Yellow | |
| 83034581 | Cr2O72- | Orange | |
| 83034582 | Cu(NH3)42+ | Dark Blue; produced when ammonia is added to Cu2+ solutions | |
| 83034583 | FeSCN2+ | Red-brown, Wine-red to dark orange | |
| 83034584 | CoCl42- | Blue (Co2+ with HCl will form a CoCl42- complex that is blue) | |
| 83034585 | Ti(H2O)63+ | Purple |