Standard electrode potential data are useful for understanding the suitability of an…

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 :
\(\mathrm{MnO}_{4}^{-}(\mathrm{aq})+8 \mathrm{H}^{+}(\mathrm{aq})+5 \mathrm{e}^{-} \longrightarrow\) 
\(\mathrm{Mn}^{2+}(\mathrm{aq})+4 \mathrm{H}_{2} \mathrm{O}(l),\)\(\mathrm{E}^{\circ}=1.51 \mathrm{~V}\) 
\(\mathrm{Cr}_{2} \mathrm{O}_{7}^{2-}(\mathrm{aq})+14 \mathrm{H}^{+}(\mathrm{aq})+6 \mathrm{e}^{-} \longrightarrow\) 
\(2 \mathrm{Cr}^{3+}(\mathrm{aq})+7 \mathrm{H}_{2} \mathrm{O}(l),\)\(\mathrm{E}^{\circ}=1.38 \mathrm{~V}\) 
Fe³⁺ (aq) + e^– Fe²⁺ (aq) E^o = 1.77V
Cl₂ (g) + 2e^– 2Cl^– (aq) E^o = 1.40 V
Identify the incorrect statement regarding the quantitative estimation of aqueous Fe (NO₃)₂ (2002)