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If the standard electrode poten tial of ...

If the standard electrode poten tial of `Cu^(2+)//Cu` electrode is 0.34V. What is the electrode potential of 0.01 M concentration of `Cu^(2+)`?

A

`0.399 V`

B

`0.281 V`

C

`0.222 V`

D

`0.176 V`

Text Solution

Verified by Experts

The correct Answer is:
B
`2e^(-) + Cu^(2+) (aq ) rarrCu s` (Reduction)
`E_(Cu^(2+)//Cu)^(@)=0.34 V,E_(Cu^(2+)//Cu)=?`
`E_(Cu^(2+)//Cu)=E_(Cu^(2+)//Cu)^(@)-(0.0591)/nlog""([Cu_((s))])/([Cu_((aq))^(2+)])`
`=0.34 -(0.0591)/2 log""1/(0.01)= 0.281V .`
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