Which of the following processes does not inv | vedclass

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(A) In the formation of $Fe(CO)_5$,the reaction is: $Fe + 5CO \rightarrow Fe(CO)_5$. Here,the oxidation state of $Fe$ remains $0$ (zero). In the rusti

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Formation of $Fe(CO)_5$ from $Fe$.

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(A) In the formation of $Fe(CO)_5$,the reaction is: $Fe + 5CO \rightarrow Fe(CO)_5$. Here,the oxidation state of $Fe$ remains $0$ (zero). In the rusting of iron: $4Fe + 3O_2 + 2xH_2O \rightarrow 2Fe_2O_3 \cdot xH_2O$,$Fe$ is oxidized from $0$ to $+3$. In the reaction with steam: $3Fe + 4H_2O \rightarrow Fe_3O_4 + 4H_2$,$Fe$ is oxidized from $0$ to $+8/3$. In the reaction with $CuSO_4$: $Fe + CuSO_4 \rightarrow FeSO_4 + Cu$,$Fe$ is oxidized from $0$ to $+2$. Therefore,the formation of $Fe(CO)_5$ does not involve the oxidation of iron.

Which of the following processes does not involve oxidation of iron?

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