Consult the table of standard electrode potentials and suggest th… - Vidyadip

Question

Consult the table of standard electrode potentials and suggest three substances that can oxidise ferrous ions under suitable conditions.

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Answer

Oxidation of ferrous ion means:
$\mathrm{Fe}^{2+}\rightarrow\mathrm{Fe}^{3+}+\mathrm{e}^{-} ; \mathrm{E}_{\mathrm{Fe} 3+/ \mathrm{Fe} 2+}^0=0.77 \mathrm{~V}$
Any substance which standard electrode potential is more than that of $\mathrm{Fe}^{+3} / \mathrm{F}^{+2}$ can oxidise ferrous ions. (refer to the table given in book)
The EMF of the substance whose reduction potentials greater than 0.77 V will oxidised ferrous ion.
For example $\mathrm{Br}_2, \mathrm{Cl}_2$, and $\mathrm{F}_2$

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