(i) A rusted piece of iron undergoes electrochemical reactions. Write the chemical reaction taking place at:
(a) the electrode that behaves as an anode.
(b) the electrode that behaves as a cathode.
(ii) Given that the standard reduction potential for Al³⁺/Al = -1ˑ66 V and ½ I₂/I^- = 0ˑ54V, what will be the standard potential of the cell made by using Al³⁺ and I^- ?

Solution

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