Rationalised 2023-24
57
Electrochemistry
Fig 2 13:  Corrosion of iron in atmosphere
Oxidation: Fe (s)®   Fe2+ (aq) +2e–
Reduction: O2
Atomospheric (g) + 4H+(aq) +4e– ® 2H2O(l)
oxidation: 2Fe2+(aq) + 2H2O(l) + ½O2(g) ® Fe2O3(s) + 4H+(aq)
to thermal plants whose efficiency is about 40% There has been
tremendous progress in the development of new electrode materials,
better catalysts and electrolytes for increasing the efficiency of fuel cells