Why is the `E^(Theta)` value for the `Mn^(3+)//Mn^(2+)` couple much postive than for `Cr^(3+)//Cr^(2+) or Fe^(3+)//Fe^(2+)`? Example

Why is the E^(Theta) value for the Mn^(3+)//Mn^(2+) couple much more positive than that for Cr^(3+)//Cr^(2+) or Fe^(3+)//Fe^(2+)

(a) why is the E^(Theta) value for the Mn^(3+)//Mn^(2+) couple much more positivethan that for Cr^(3+)//Cr^(2+) or Fe^(3+) // Fe^(2+) ? Explain. (b) What is meant by 'disproportionation' of an oxidation state? Give example.

Why is the E^(ɵ) value for the Mn^(3+)//Mn^(2+) couple much more position than that for Cr^(3+)//Cr^(2+)" or "Fe^(3+)//Fe^(2+) ? Explain.

Why is the E^(0) value for the Mn^(3+)|Mn^(2+) couple much more positive than that for Cr^(3+)|Cr^(2+) or Fe^(3+)|Fe^(2+) ? Explain.

S_(1) : Mn^(2+) compounds more stable than Fe^(2+) towards oxidation to their +3 state. S_(2) : Titanium and copper both in the first series of transition metals exhibits +1 oxidation state most frequently. S_(3) : Cu^(+) ions is stable in aqueous solutions. S_(4) : The E^(0) value for the Mn^(3+)//Mn^(2+) couple much more positive than that for Cr^(3+)//Cr^(2+) or Fe^(3+)//Fe^(2+) ,

Why is the value for (Mn^(3+))/(Mn^(2+)) couple much more positive than that for (Cr^(3+))/(Cr^(2+)) or (Fe^(3+))/(Fe^(2+)) ? Explain

Why is the value for (Mn^(3+))/(Mn^(2+)) couple much more positive than that for (Cr^(3+))/(Cr^(2+)) or (Fe^(3+))/(Fe^(2+)) ? Explain