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The explanation claims that at:
Cathode 1: copper is reduced
Cathode 2: OH- is oxidized
But, the reduction potential of water is higher than copper and the oxidation potential of sulfate is higher than OH-. So, given their reduction potentials, water should be reduced at cathode 1 and sulfate should be oxidized at cathode 2 right? Is this an error on their part or am I not seeing something?