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The standared reduction potntial E^o for...

The standared reduction potntial `E^o` for the half-reactions are as.
`Zn=Zn^(2+) + 2 e^- , E^o = + 76 V`
` Fe = Fe^(2+) + 2e^- , E^o = + 0.41 V`.
The EMF for cell recaction `Fe^(2+) = Zn rarr Zn^(2+) + Fe ` is.

A

` -0. 35 V`

B

` +0.35 V`

C

` + 1.17 V`

D

` -1.17 V`

Text Solution

Verified by Experts

The correct Answer is:
b
In this reaction
.
` EMF=E_("cathode")-E_("anode")`
`=- 0.41 -(-0.76 ) EMF =+0.35 V`.
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