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Standard electrode potential data are us...

Standard electrode potential data are useful for understanding the stability of an oxidant in a redox titration . Some half reactions and their standard potentials are given below :
`MnO_(4)^(-)(aq)+8H^(+)(g)+5e^(-)toMn^(2+)(aq)+4H_(2)O(l)E^(@)=1*51V`
`Cr_(2)O_(7)^(2-)(aq)+14H^(+)aq)+6e^(-)to2Cr^(3+)(aq)+7H_(2)+(l)E^(@)=1*38V`
`Fe^(3+)(aq)e^(-)toFe^(2+)(aq) " " E^(@)=0*77V`
`Cl_(2)(g)+2e^(-)to2Cl^(-)(aq) " " E^(@)=1*40V`
Identify the only incorrect statement regarding the quantitative estimation of aqueous `Fe(NO_(3))_(2)`.

A

`MnO_(4)^(-)` can be used in aqueous HCl

B

`Cr_(2)O_(7)^(2-)` can be used in aqueous HCl

C

`MnO_(4)^(-)` can be used in aqueous `H_(2)SO_(4)`

D

`Cr_(2)O_(7)^(2-)` can be used in aqueous `H_(2)SO_(4)`

Text Solution

Verified by Experts

The correct Answer is:
A
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