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MHT CET Chemistry question

ChemistryElectrochemistryMHT CET

is unstable in solution and undergoes simultaneous oxidation and reduction, according to the reaction, 2Cu^+(aq) \rightleftharpoons Cu^{2+}(aq) + Cu(s) Choose correct for above reaction if and [MHTCET 2008]

Answer: (C)

Solution

The disproportionation is spontaneous (Cu+ is unstable), so E° must be positive, which rules out (a) and (d); with one

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Question ID VK-067008