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Consult the table of standard eletrode potentials and suggest three substances that can oxidise ferrous ions under suitable conditions |
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Answer» Solution :Oxidation of ferrous ions means the following reaction should occur <BR> : `Fe^(2+) toFe^(3+) + e^(-),E_("ox")^(@) =-0.77 V` Only those substances can OXIDISE `Fe^(2+)` to `Fe^(3+)`which are stronger oxidising AGENTS and have POSITIVE reduction potentials greater than 0.77 V so that emf of the cell reaction is positive. Elements lying below `Fe^(3+) // Fe^(2+)`in the electrochemical series, e.g.,`Br_(2)``Cl_(2)` , and `F_(2)`will satisfy this requirement. |
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