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Question
Account for the following:
Cu+ ion is unstable in aqueous solution.
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Solution
Cu2+ is more stable than Cu+ in aqueous medium. Cu2+ has high hydration energy that compensates for the energy required to remove one electron from Cu+ to form Cu2+. So in aqueous medium, Cu+ gives Cu2+ and Cu.
Chemical reaction: \[\ce{2Cu^+_{( aq)} -> Cu^{2+}_{ (aq)} + Cu_{(s)}}\]
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