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A rusted piece of iron undergoes electrochemical reactions. Write the chemical reaction taking…
(i)[1.0]
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)[1.0]
Given that the standard reduction potential for $\text{Al}^{3+}/\text{Al} = -1\cdot66\text{ V}$ and $\frac{1}{2}\text{I}_2/\text{I}^- = 0\cdot54\text{ V}$, what will be the standard potential of the cell made by using $\text{Al}^{3+}$ and $\text{I}^-$?
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From ISC 2024 Specimen Chemistry Paper 1, question 7.