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Calculate emf of the following cell reac...

Calculate emf of the following cell reaction at 2968 K :
`Ni(s)//Ni^(2+)(0.01 M) || Cu^(2+)(0.1 M)//Cu(s)`
[Given `E_(Ni^(2+)//Ni)^(@)=-0.25" V ",E_(Cu^(2+)//Cu)^(@)=+0.34 " V "`]
Write the overall cell reaction.

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