Chemistry
The ion which is discharged at the anode during the electrolysis of copper sulphate solution using platinum electrodes as anode and cathode is:
Cu2+
OH-
SO42-
H+
Electrolysis
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Answer
OH-
Reason — The SO42- and OH- ions both migrate to the anode. The OH- ions, being lower in electrochemical series as compared to SO42- ions, discharge to form neutral (OH) radical. The neutral (OH) radicals reunite to form water and oxygen.
4OH- - 4e- ⟶ 4OH
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