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Q.

The electrode potentials for Cu2+aq+e-→Cu+aq and Cu+aq+e-→Cus are +0.15 V and +0.50 V respectively. The value of ECu2+/Cuowill be.

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a

0.150 V

b

0.500 V

c

0.325 V

d

0.650 V

answer is C.

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Detailed Solution

∆G3=∆G1+∆G2 -2FEo=-1F×0.15+-1 F×0.50 -2FEo=-0.15F-0.50F               =-F0.15+0.50         Eo=-0.652=0.325 V
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