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The electrode potential E(Zn^(+2)//Zn) ...

The electrode potential `E_(Zn^(+2)//Zn) ` of a zinc electrode or `25^(@)C` with an aqueous solution of `0.1 M ZnSO_(4)` is `[E_((Zn^(+2)//Zn))=-0.76V]["assume"(2.3-3RT)/(F)=0.06at298K]`

A

`+0.73V`

B

`-0.79V`

C

`-0.82V`

D

`-0.70V`

Text Solution

Verified by Experts

The correct Answer is:
B
`Zn^(+2)+2e^(-)toZn`
`E_((Zn^(+2)//Zn))=E_((Zn^(+2)//Zn))^(@)`
`-(2.303RT)/(2F)log.([Zn])/([Zn^(+2)])`
`=-0.76-(0.06)/(2)log.(1)/([0.1])`
`=-0.76-0.03=-0.79V`
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