1.

The values of E_(M^(3+)//M^(2+))^(o) of metals Cr, Mn, Fe and Co are -0.41, 0.57, +0.77 and +1.97 respectively. Then whose oxidation state easily converted into +2 to +3 ?

Answer»

Cr
Mn
Fe
CO

Solution :The METAL which has less REDUCTION potential value will easily converted into +2 to +3.
`Cr^(2+) to Cr^(3+) +E^(-)E_(Cr^(3+)//Cr^(2+))^(@)=-0.41V` Minimum
`Co^(2+)toCo^(3+)+e^(-) E_(Co^(3+)//Co^(2+))^(@)=1.97V` Maximum.


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