Physical Appearance of Inorganic Salts
| Sr No. | Salt | Colour |
|---|---|---|
| 1 | MnO, MnO2, FeO, CuO, Co3O4, Ni2O3; sulfides of Ag+, Cu+, Cu2+, Fe2+, Co2+, Pb2+, Hg2+ | Black |
| 2 | Hydrated Cu2+ salts | Blue |
| 3 | HgO, HgI2, Pb3O4 | Red |
| 4 | Cr3+, Cr6+, Ni2+, hydrated Fe2+ salts | Green |
| 5 | Hydrated Mn2+ salts | Light Pink |
| 6 | KO2, K2Cr2O7, Sb2S3, ferricyanides | Orange |
| 7 | Hydrated Co2+ salts | Reddish Pink |
| 8 | Chromates, AgBr, As2S3, AgI, PbI2, CdS | Yellow |
| 9 | CdO, Fe2O3, PbO2, CuCrO4 | Dark brown |
Read more about this topic: Qualitative Inorganic Analysis
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