1.

The standard reduction potentials of Cu^(2+)|"Cu and"Cu^(2+)| Cu^(+) are 0.337V and 0.153V respectively The standard electrode potential of Cu^(+)|Cu half cell is

Answer»

0.184V
0.827V
0.521
0.490V

Solution :We have, ltBrgt
From the half-cell REACTIONS, it follows that
`DeltaG_(3)^(o)=DeltaG_(1)^(o)-DeltaG_(2)^(o)` i.E., `-FE_(Cu^(2+)//Cu)^(o)=-2FE_(Cu^(2+)//Cu)^(o)-(-FE_(Cu^(2+)//C^(+))^(o))`
or `E_(Cu^(+)//Cu)^(o)=2E_(Cu^(2+)//Cu)^(o)-E_(Cu^(2+)//Cu^(+))^(o)=2(0.337V)-0.153V=0.521V`.


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