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Consult the table of standard electrode ...

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

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* Substances that are stronger oxidising agents than ferrous ions can oxidise ferrous ions.
`Fe^(2+) to Fe^(3+) +e^(-)(E_(Fe^(2+)|Fe)^(Theta)=0.77V)`
* This implies that the substances having higher reduction potential than +0.77 V can oxidise ferrous ions to ferric ions. Three substances that can do so are `F_(2), Cl_(2) and O_(2)`.
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