1.

In dilute aqueous H_(2)SO_(4), the complex diaquo-dioxalato ferrate (II) is oxidized by MnO_(4)^(-).For this reaction, the ratio of the rate of change of [H^(+)] to the rate of change of MnO_(4)^(-) is

Answer»


SOLUTION :The given complex, `[FE(C_(2)O_(4))(H_(2)O)_(2)]^(2-)` contains
Fe in +2 oxidation state. In acidic medium, `KMnO_(4)` oxidizes `Fe^(2+)` to `Fe^(3+)`
`MnO_(4)^(-)+8H^(+)+5Fe^(2+)rarrMn^(2+)+4H_(2)O+5Fe^(3+)`
`5Fe^(2+)-=5[Fe(C_(2)O_(4))_(2)(H_(2)O)_(2)]^(2-)`
`therefore ("Rate of change of "[H^(+)])/("Rate of change of "[MnO_(4)^(-)])=(8)/(1)=8`


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