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The E^(0)(M^(2+)//M) value for copper is...

The `E^(0)(M^(2+)//M)` value for copper is positive `(+0.34V)`. What is possibly the reason for this?

Text Solution

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Reduction potential will depend on
(i) Cu(s) `to` Cu(g), `DeltaH` (atomisation)
(ii) Cu(g) `to Cu^(2+),(IE_(1) + IE_(2))`
(iii) `Cu^(2+) overset(H_(2)O)(to) Cu^(2+),(DeltaH_(hyd))`
Due to high enthalpy of atomisation and low `DeltaH_(hydration)` energy `E_(cu^(+2)//Cu)^(0)` is high.
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