When dilute copper (ll) chloride solution is electrolysed, the reaction at the cathode is represented by the equation
-
A.
Cu → Cu2+ + 2e- -
B.
Cu2+ + 2e- → Cu -
C.
40H- – 4e- → O2 + 2H2O -
D.
2CI- → CI2 + 2e
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