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Celll equation : A = 2B^(+) rarr A^(2+) ...

Celll equation : `A = 2B^(+) rarr A^(2+) + 2 B`
`A^(2+) + 2e rarr A`
`E^@ = + 0.34 V` and `log_(10) K= 15. 6 ` at `300 K` for cell reactions Find `E^@` for `B^(+) +e rarr B`
Given `[( 2.303 RT)/(nF) =0.059]` at `300 K`.

A

0.81

B

1.26

C

`-0.54`

D

`+0.94`

Text Solution

Verified by Experts

The correct Answer is:
D
`E_("cell")^(0)=(0.059)/(2)logK`
`E_(B^(-)//B)^(0)-E_(A^(+2)//A)^(0)=(0.059)/2xx15.6`
`E_(B^(-)//B)^(0)=0.80`
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