Question

what is the cathode and anode reaction when corrosion occurs??​

Answer 1

Answer:

In the corrosion process, iron metal acts as the anode in a galvanic cell and is oxidized to Fe2+; oxygen is reduced to water at the cathode. The relevant reactions are as follows: at cathode: O2(g)+4H+(aq)+4e−→2H2O(l)E°=1.23V.

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Answer 2

Answer:

Explanation:

Anode - The electrode where galvanic reactions generate electrons - negative ions are discharged and positive ions are formed. Corrosion occurs at the anode.

Cathode - The electrode that receives electrons - positive ions are discharged, negative ions are formed. The cathode is protected from corrosion.