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| 1. |
E^(@) of Cu is +0.34V while that of Zn is -0.76V. Explain |
| Answer» Solution :In CASE of copper, the hydration enthalpy of `CU^(2+)` does not balance the summation of sublimation enthalpy and ionization ENTHALPIES and so it has positive `E^(@)` VALUES. However in case of ZN the second ionization enthalpy is low because electrons is to be removed from 4s-orbital to attain stable `3d^(10)` configuration. Hence Zn has negative `E^(@)` value | |