Answer
Magnesium is expected to oxidize most rapidly in solution (iii) an HCl solution containing dissolves oxygen and $Fe^{2+}$ ions. This is because this solution has two reduction reactions that will use the electrons resulting from the oxidation of magnesium.
Work Step by Step
Magnesium is expected to oxidize most rapidly in solution (iii) an HCl solution containing dissolves oxygen and $Fe^{2+}$ ions. This is because this solution has two reduction reactions that will use the electrons resulting from the oxidation of magnesium.
