Iron(III) chromate
(Redirected from Chromate of iron)
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| Template:Longitem | Fe2(CrO4)3 |
| Molar mass | 459.6808 g/mol |
| Appearance | yellow powder |
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Iron(III) chromate is the iron(III) salt of chromic acid with the chemical formula Fe2(CrO4)3.
Discovery
Iron(III) chromate was discovered by Samuel Hibbert-Ware in 1817 while visiting Shetland.[2]
Production
It may be formed by the salt metathesis reaction of potassium chromate and iron(III) nitrate, which gives potassium nitrate as byproduct.
- 2 Fe(NO3)3 + 3 K2CrO4 → Fe2(CrO4)3 + 6 KNO3
It also can be formed by the oxidation by air of iron and chromium oxides in a basic environment:
- 4 Fe2O3 + 6 Cr2O3 + 9 O2 → 4 Fe2(CrO4)3
References
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