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(B) The process of rusting involves the oxidation of iron and the reduction of oxygen. $1$. At the anode: $2Fe(s) 	o 2Fe^{2+}(aq) + 4e^-$. $2$. At th

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Metallic iron is reduced to $Fe^{2-}$ ions

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(B) The process of rusting involves the oxidation of iron and the reduction of oxygen. $1$. At the anode: $2Fe(s) 	o 2Fe^{2+}(aq) + 4e^-$. $2$. At the cathode: $O_2(g) + 4H^+(aq) + 4e^- 	o 2H_2O(l)$. $3$. The $Fe^{2+}$ ions are further oxidised by atmospheric oxygen to $Fe^{3+}$ ions,which form hydrated ferric oxide $(Fe_2O_3 \cdot xH_2O)$,known as rust. $4$. Option $B$ is incorrect because metallic iron is oxidised,not reduced,and it forms $Fe^{2+}$ or $Fe^{3+}$ ions,not $Fe^{2-}$ ions.

Which of the following statements regarding the rusting of iron is incorrect?

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