Essential Chemistry for IGCSE - Electricity And Chemistry (Section 3 - No. 4)
In the electrolysis of aqueous copper(II) sulfate using inert electrodes, which of the following is true regarding the concentration of copper(II) ions?
It increases
It decreases
It stays the same
It causes a change in pH.
Explanation
Copper(II) ions are used up as copper is deposited at the cathode, therefore, their concentration decreases.
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