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Question

Cu+ ion is unstable in aqueous solution because _______________.

A
it undergoes oxidation
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B
it undergoes reduction
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C
it undergoes disproportination
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D
it forms complex
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Solution

The correct option is C it undergoes disproportination
Cu+ ion is unstable in aqueous solution because it undergoes disproportionation. It gets oxidised into cuprous ion and reduced into copper metal.

The disproportionation reaction is as follows:
2Cu+Cu2++Cu

Hence, option C is the correct answer.

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