. The chemistry of corrosion of iron is essentially an electrochemical phenomenon


The chemistry of corrosion of iron is essentially an electrochemical phenomenon. Explain the reactions occurring during the corrosion of iron in the atmosphere

Best Answer

According to electrochemical theory of rusting the impure iron surface behaves like small electrochemical cell in the presence of water containing dissolved oxygen or carbon dioxide. In this cell pure iron acts as anode and impure iron surface acts as cathode. Moisture having dissolved CO2 or O2 acts as an electrolyte. The reactions are given below

electrochemical phenomenon

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