3 FeSO4 + K2CrO4 + 8 HCl → CrCl3 + FeCl3 + 2 KCl + Fe2(SO4)3 + 4 H2O
This is an acid-base reaction (neutralization): K2CrO4 is a base, HCl is an acid.
This is an oxidation-reduction (redox) reaction:
3 FeII - 3 e- → 3 FeIII (oxidation)
CrVI + 3 e- → CrIII (reduction)
FeSO4 is a reducing agent, K2CrO4 is an oxidizing agent.
Reactants:
- FeSO4 – Iron(II) sulphate
- K2CrO4 – Potassium chromate
- HCl – Chlorane , Hydrogen chloride
- Other names: Hydrochloric acid , M , Uriatic acid
- Appearance: Colorless, transparent liquid, fumes in air if concentrated ; Colorless gas ; Colourless compressed liquefied gas with pungent odour ; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]
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