Standard electrode potential dataare useful for understandingthe suitability of an oxidant in a redoxtitrationsomehalfcell reactionsand theirstandardpotentials are givenbelow MnO_(4)^(-)(aq)+8H^(+)(aq)+5e^(-)rarrMn^(2+)(Aq)+4H_(2)O(l)^(@)=1.51 V Cr_(2)O_(7)^(2-)(Aq)+14 H^(+)(aq)+6e^(-)rarr2cr^(3+)(aq)+7H_(2)O(l),E^(2)=1.38 V CI_(2)(g)+2e^(-)rarr2CI^(-)(aq),E^(@)=1.40 V Identify the incorrect statement regardingthe qunatitavite estimation of gaseous Fe(NO_(3))_(2)

Standard electrode potential dataare useful for understandingthe suita

1.	Standard electrode potential dataare useful for understandingthe suitability of an oxidant in a redoxtitrationsomehalfcell reactionsand theirstandardpotentials are givenbelow MnO_(4)^(-)(aq)+8H^(+)(aq)+5e^(-)rarrMn^(2+)(Aq)+4H_(2)O(l)^(@)=1.51 V Cr_(2)O_(7)^(2-)(Aq)+14 H^(+)(aq)+6e^(-)rarr2cr^(3+)(aq)+7H_(2)O(l),E^(2)=1.38 V CI_(2)(g)+2e^(-)rarr2CI^(-)(aq),E^(@)=1.40 V Identify the incorrect statement regardingthe qunatitavite estimation of gaseous Fe(NO_(3))_(2)
Answer» `MnO_(4)^(-)` can beusedin aqueous HCI `Cr_(2)O_(7)^(2-)` can be used in aqueous HCI `MnO_(4)^(-)` can be usedin aqueous `H_(2)SO_(4)` `Cr_(2)O_(7)^(2-)`can be used in aqueous `H_(2)SO_(4)` Solution :The REACTION between `MnO_(4)^(-)` and HCI may be represented as follows `2MnO_(4)^(-) (AQ)+16H^(+) +10CI^(-) rarr 2Mn^(2+) (aq)+8H_(2)O(I)+5CI_(2)(g)` Thuson the BASISOF this reactionfollowingelectrochemcial cell will be represented as since `E_(cell)^(2)=e_(cathode)^(@) -E_(anode)^(2)` `E_(cell)^(@)` is positive hence `triangle G^(@)` is negativethus above celll reaction is feasible but `MnO_(4)^(-1)`ion can oxidse `FE^(2+)` to `Fe^(3+)`and `CI^(-)` to `CI_(2)` in aqueous medium also Therefore for quantivative estimiationof aqueous`Fe(NO_(3))_(2)`it is not a suitable reagent