Redox reaction play a pivotal role in chemistry and biology. The values of standard redox potential (E^(@)) of two half-cell reactions decide which way the reaction is expected to proceed. A simple example is a Daniel cell in which zinc goes into solution and copper gets deposited. give below are a set of half-cell reaction (acidic medium) along with their E^(@) (V with respect to normal hydrogen electrode) values. using this data obtain the correct explanation to folloing Questions. I_(2)+2e^(-)to2I^(-)""E^(0)=0.54 Cl_(2)+2e^(-)to2Cl^(-)""E^(0)=1.36 Mn^(3+)+e^(-)toMn^(2+)""E^(0)=1.50 Fe^(3+)+e^(-)toFe^(2+)""E^(0)=0.77 O_(2)+4H^(+)+4e^(-)to2H_(2)O""E^(0)=1.23 Q. Sodium fusion extract, obtained from aniline, on treatment with iron (II) sulphate and H_(2)SO_(4) in presence of air gives a prussian blue precipitate. the blue colour is due to the formation of

Redox reaction play a pivotal role in chemistry and biology. The value

1.	Redox reaction play a pivotal role in chemistry and biology. The values of standard redox potential (E^(@)) of two half-cell reactions decide which way the reaction is expected to proceed. A simple example is a Daniel cell in which zinc goes into solution and copper gets deposited. give below are a set of half-cell reaction (acidic medium) along with their E^(@) (V with respect to normal hydrogen electrode) values. using this data obtain the correct explanation to folloing Questions. I_(2)+2e^(-)to2I^(-)""E^(0)=0.54 Cl_(2)+2e^(-)to2Cl^(-)""E^(0)=1.36 Mn^(3+)+e^(-)toMn^(2+)""E^(0)=1.50 Fe^(3+)+e^(-)toFe^(2+)""E^(0)=0.77 O_(2)+4H^(+)+4e^(-)to2H_(2)O""E^(0)=1.23 Q. Sodium fusion extract, obtained from aniline, on treatment with iron (II) sulphate and H_(2)SO_(4) in presence of air gives a prussian blue precipitate. the blue colour is due to the formation of
Answer» `Fe_(4)[Fe(CN)_(6)]_(3)` `Fe_(3)[Fe(CN)_(6)]_(2)` `Fe_(4)[Fe(CN)_(6)]_(2)` `Fe_(3)[Fe(CN)_(6)]_(3)` Solution :`Na+C+Nto underset("SODIUM EXTRACT")(NaCN)` `Fe^(2+)+6CN^(-)to[Fe(CN)_(6)]^(4-)` `4Fe^(3+)+3[Fe(CN)_(6)]^(4-)to underset("PRUSSIAN BLUE ppt.")(Fe_(4)[Fe(CN)_(6)]_(3)`.