what is the oxidation state of Fe in product formed when acidified potassium ferrocyanide is treated with hydrogen peroxide
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When acidified potassium ferrocyanide (K4[Fe(CN)6]) reacts with hydrogen peroxide, it yields potassium ferricyanide (K3[Fe(CN)6]).
It is a redox reaction, which is described as follows:
K4[Fe(CN)6] + H2SO4 + H2O2 ---------------- K3[Fe(CN)6] + K2SO4 + H2O
In this redox reaction,
2 FeII - 2 e- → 2 FeIII (oxidation)
2 O-I + 2 e- → 2 O-II (reduction)
K4[Fe(CN)6] acts as a reducing agent, whereas Hydrogen peroxide is a very strong oxidizing agent that oxidizes iron.
The oxidation state of Fe changes from +2 to +3.
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