Math, asked by amanpatel2628, 9 months ago

E value for the mn 3+ /mn 2+ , couple is highly positive (+1.57 v) as compare to cr 3+ /cr 2+

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Answered by niswarravirao00

1

Answer:

The reason to this is: #half filled configuration of Mn+2: Mn2+ exists in 3d5 ... for Mn3+/Mn2+ couple much more positive than that for Cr3+/Cr2+ or Fe3+/Fe2+? ... is attained by Cr+3 than Cr+2. hence Cr+3------->Cr+2 is less feasible. ... Hence, the E value of first reaction will be greater than the other two.

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