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The measured EMF at 298 K for the cell r...

The measured EMF at 298 K for the cell reaction, `Zn(s) + Cu^(2+)(1.0 M) rarr Cu(s) + Zn^(2+)(0.1M)` is 1.13 V. Calculate `E^(@)` for the cell reaction.

Text Solution

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Using Nernst equation `E_(cell)=E_(cell)^(@)-(0.0591 V)/(2)log [(Zn^(2+))/(Cu^(2+))]`
substituing values of `E_(cell)` (1.13 V) countration of `Zn^(2+)` (0.1) M and concnetration of `Cu^(2+)` (1.0 M)`
`E^(@)=1.13 V-0.0295 =1.1 V`
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