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E^(c-) for FeY^(c-)+e^(c-) rarr FeY^(2-)...


`E^(c-)` for `FeY^(c-)+e^(c-) rarr FeY^(2-)`
given: Fe+3/+2=0.77V
(a)`0.13V`
(b)`-0.636V`
(c)`+0.636V`
(d)`1.41V`

A

`0.13V`

B

`-0.636V`

C

`+0.636V`

D

`1.41V`

Text Solution

Verified by Experts

The correct Answer is:
a
For `underset((Fe^(+3)+e^(-) rarr Fe^(+2)))(FeY^(c-)+e^(-) rarr FeY^(2-)), ` the change is

`E^(c-)._(Fe^(+3),FeY^(c-)|Fe^(+2),FeY^(2-))`
`=E_(Fe^(+3)|Fe^(+2))^(c-)-(0.059)/(1)log.(K_(eq1))/(K_(eq2))`
`=0.77-(0.059)/(1)log.(1.3xx10^(25))/(2.1xx10^(14))=0.77-0.64=0.13V`.
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