Question
Sat January 21, 2012 By: Kanwal Sandhu
 

why Cu+ unstable in aquous state but Cu2+ is stable?

Expert Reply
Sun January 22, 2012

In an aqueous medium, Cu2+ is more stable than Cu+. This is because although energy is required to remove one electron from Cu+ to Cu2+, high hydration energy of Cu2+ compensates for it. Therefore, Cu+ion in an aqueous solution is unstable. It disproportionates to give Cu2+ and Cu.

    

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