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Write Nernst equation and calculate e.m....

Write Nernst equation and calculate e.m.f. of the cell at 298 k.
`Mg(s)|Mg^(2+)(0.001 M)||Cu^(2+)(0.0001M)|Cu(s)`

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At anode, `Mg rarr Mg^(2+) + 2e^(-)`
At cathode,
`ul(Cu^(2+) + 2e^(-) rarrCu)`
`ul(Mg+ Cu^(2+) rarr Mg^(2+) + Cu)`
`E= E^(@)- (0.059)/(2) "log" ([Mg^(2+)])/([Cu^(+)])`
`=2.71 - (0.059)/(2) "log" (0.01)/(0.0001)`
`=2.71- (0.059)/(2)`
=2.68V
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