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

The `E _(M^(2+)// M)^(0)` value for copper is positive. Suggest a possible reason for this.

Text Solution

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(i) Copper has a positive reduction potential. Elemental copper is more stable than `Cu^(2+)`.
(ii) Copper having positive sign for electrode potential merely means that copper can undergo reduction at faster rate than reduction of hydrogen.
(iii) The electron giving reaction (oxidation) of copper is slower than that of hydrogen. It is determined from the result of S.H.E (Standard Hydrogen Electrode) potential value experiment
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