Question

1. Basic principle of corrosion of rusting is redox reaction. Explain the
statement by giving equation.​

Answer 1

Answer:

Rust (Fe2O3•xH2O) is formed by the subsequent oxidation of Fe2+ by atmospheric oxygen. 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.