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Find the value of AG^(@) at 25^(@)C for ...

Find the value of `AG^(@)` at `25^(@)C` for the following electrochemical cell.
`Cu|Cu^(2+)(1M)||Ag^(+)(1M)|Ag`
`[Ec_(u)=+0.34V, E_(Ag)^(@)=+0.8V]`
`F=96487C`

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`Cu|Cu^(2+)(1M)"||"Ag^(+)(1M)|Ag(E_(Cu)^(0)=+0.34V and E_(Ag)^(0)=0.8V)
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