 Standard electrode potential data are useful for understanding the suitability of an oxidant in a redox titration. Some

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Q 2670034816.     Standard electrode potential data are useful for understanding the suitability of an oxidant in a redox titration. Some half-cell
reactions and their standard potentials are given below:

Mn_4^(-) (aq)+8H^(+)(aq)+5e^(-) -> Mn^(2+) (aq)+4H_2O(l) E^0 = 1.51V

Cr_2O_7^(-) (aq)+14H^(+) (aq) +6e^(-) -> 2Cr^(3+)(aq) +7H_2O(l) E^0 = 1.38V

Fe^(3+)(aq)+e^(-) -> Fe^(2+) (aq) E^0 = 0.77V

Cl_2(g)+2e^(-) -> 2Cl^(-) (aq) E^0 = 1.40V

Identify the only INCORRECT statement regarding the quantitative estimation of aqueous Fe(NO_3)_2
JEE 2002 Prelims A Mn_4^(-) can be used in aqueous HCl

B Cr_2O_7^(2-) can be used in aqueous HCl

C Mn_4^(-) can be used in aqueous H_2SO_4

D Cr_2O_7^(2-) can be used in aqueous H_2SO_4

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