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During the electrolysis of copper II sulphate b... - JAMB Chemistry 2018 Question

During the electrolysis of copper II sulphate between platinum electrodes, if litmus solution is added to the anode compartment

A
the litmus turns blue but no gas is evolved
B
the litmus turns blue and oxygen is evolved
C
the litmus turns blue and hydrogen is evolved
D
the litmus turns red and oxygen is evolved
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Correct Option: D
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