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8.4     The E^{\ominus }(M^{2+}/M) value for copper is positive (+0.34V). What is possible reason for this? (Hint: consider its high \Delta _{a}H^{\ominus } and low \Delta _{hyd}H^{\ominus })
 

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    The E^{\ominus }(M^{2+}/M) value for metal depends on-

  • Sublimation energy
  • Ionisation energy
  • Hydration energy

Copper has a high value of atomisation enthalpy and low hydration energy. Thus, as a result, the overall effect is  E^{\ominus }(M^{2+}/M) for copper is positive.

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manish

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