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chem ap Aqueous Ion Colors

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