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Consult the table on standard electrode ...

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

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`Fe^(2+)` (ferrous) ions gets oxidised to `Fe^(3+)` (farriec) ion as follows
`Fe^(2+) to Fe^(3+)+e^(-)E_(0x)^(0)=-0.77V`
Only those substances can oxidise `Fe^(2+)` ions to `Fe^(3+)` ions which can accept electrons released during oxidation or are placed above iron in electrochemical series. Three such substances
are `Cl_(2)(g), Br_(2)(g) and F_(2)(g).`
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