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Consult the table of the standard electrode potentials and suggest three substances that can oxidize ferrous ions under suitable conditions. |
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Answer» SOLUTION :Oxidation of ferrous ions MEANS that the FOLLOWING reactions should OCCUR: `Fe^(2+)toFe^(3+)+e^(-),E_(o x)^(@)=-0.77V` Only those substances can oxidize `Fe^(2+)` to `Fe^(3+)` which are stronger oxidizing agents and have positive reduction potentials greater than 0.77 V so that EMF of the cell reaction is positive. this is so for elements lying below `Fe^(3+)//Fe^(2+)` in the electrochemical series, i.e., `Br_(2),Cl_(2)` and `F_(2)`. |
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