A smuggler could not carry gold by depositing iron on the gold surface since
A smuggler could not carry gold by depositing iron on the gold surface since
gold is denser
iron rusts
gold has higher reduction potential than iron
gold has lower reduction potential than iron
Solution
Gold having higher $E_{\text {Red }}^{0}$ and oxidises $\mathrm{Fe} \longrightarrow \mathrm{Fe}^{2+}$
Gold has a reduction potential \(=+1.5 \mathrm{~V}\).
Iron has a reduction potential \(=-0.44 \mathrm{~V}\).
Thus, gold has a higher reduction potential than iron.
An element with a higher reduction potential is a stronger oxidizing agent.
So, gold is a stronger oxidizing agent than iron.
Hence, gold will get reduced itself instead of iron.
Therefore, iron can not be deposited on the gold surface.
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