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Heat of Formation

Explain why C...

Question

Explain why Cu⁺ ion is not stable in aqueous solutions?

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Solution

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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