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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. 80 `

B

` 1.26 `

C

` -0. 64`

D

` +0.94`

Text Solution

Verified by Experts

The correct Answer is:
A
`E_(cell)^@ =(0.059)/9 log k`
`E_(B^+//B)^@ -E_A^@+ 2//A= (0.59)/2 log`
`E_(B^+//M)^@ - 34. = (0.059)/2 xx 15 .6`
` E_(B^+//B)^@ = 0. 80`.
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