In the electrolysis of CuSO4(g) using platinum electrodes, the reaction at the anode is
-
A.
4H+ + 4e– → 2H2 -
B.
4OH– – 4e– → 2H2O + O2 -
C.
2OH – 2e– → 2OH -
D.
2OH– + 2OH– → 2H2O + O2
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