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If electrode potential of following cell...

If electrode potential of following cell:
`Pt_(s)|Fe_(aq)^(2+),Fe_(aq)^(3+)||MnO_(4(aq))^(-),Mn_(aq)^(2+),H_(aq)^(+)|Pt_(s)`
is X then calculate value of 20X.
[Given: `E_(MnO_(4)^(-)|Mn^(2+) = 1.51 V,`
`E_(Fe^(3+)|Fe^(2+)` = 0.78 V,` (2.303 RT)/F = 0.06]

Text Solution

Verified by Experts

The correct Answer is:
4
`-0.12 - (0.0591)/2 log (1/X) = -0.24`
`log 1/X = (0.12 xx 2)/0.06 =4`
`X = 10^(-4)`
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