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Cu^+ ion is not stable in aqueous soluti...

`Cu^+` ion is not stable in aqueous solution because of diproportionation reaction . `E^(@) ` value for the disproportionation of `Cu^(+)` is :
`(E_(cu^(2+)// cu^+)^(@) = + 0.15 V , E_(cu^(+) // cu)^(@)= + 0.34 V )`

A

`-0.19 V `

B

`-0.38 V `

C

`+ 0.19 V `

D

`+ 0.38 V `

Text Solution

Verified by Experts

The correct Answer is:
C
(1) ` Cu^(+2) + 1e^(-) to Cu^(+) , (0.15 xx 1) , (2) Cu^(+1) + 1e^(-) to Cu, (0.34 xx 1)`
(3) `Cu^(+1) + Cu^(+1) to Cu+ Cu^(+2) , (E^(0) xx 1) , (3) = (2) - (1) E^(0) = (0.34 - 0.15) = 0.19V `
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