The stability of Cu 2 + is more than Cu + salts in aqueous solution due to -

The stability of Cu2+ is more than Cu+ salts in aqueous solution due to -
  1. second ionisation enthalpy.
  2. first ionisation enthalpy.
  3. enthalpy of atomization.
  4. hydration energy.

Solution

The stability of Cu2+ (aq) rather than Cu+ (aq) is due to the much more negative ∆hydHo of Cu2+ (aq) than Cu+ , which more than compensates for the second ionisation enthalpy of Cu. The Cu2+ ion has a greater charge density than Cu+ ion and thus forms much stronger bonds releasing more hydration energy.

Asked in: NEET 2023 (All India)

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