1.

The standard reduction potential ofCu^(2+) // Cu and Cu^(+) // Cuare 0.337 and 0.153 V respectively . The standard electrode poetential of Cu^(2+) // Cu^(+) half cell will be

Answer»

`0.184 V `
`0.827V `
`0.521 V `
`0.490V `

Solution :(1) `Cu^(+2)+ 2E^(-) to Cu , (2 XX 0.337) ` (2)` Cu^(+1) + 1e^(-) to Cu, (1 xx 0.153)`
(3) `Cu^(+2) + 1e^(-) to Cu^(+) , (1 xx E_3^(0)) ` ,(3) = (1)-(2)
` 1 xx E_(3)^(0) = (2 xx 0.337) -(1 xx 0.153) , E_3^(0) = 0.674 - 0.153 = 0.521`


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