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In the electrolysis of CuSo4 g using platinum e... - JAMB Chemistry 2015 Question

In the electrolysis of CuSo4(g) using platinum electrode the reaction at the anode is
A
4H+ 4e - 2H2
B
4OH-- 4e = 2H2O + O2
C
2OH - 2e- = 2OH
D
2OH- + 2OH = 2H2O + O2
correct option: b
40H − 4e → 2H2O + O2is the reaction of sun at the anode in the electrolysis of CuSO4 (g) using platinum particles. Option A,C,D are not formed as a result of the equation
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