CH-1810
Electrolysis of solutions
Chemistry · Secondary 4 · Medium · Electrolysis of solutions
A student electrolyses aqueous copper(II) sulfate using copper electrodes at constant current. The mass of the cathode is measured every 5 minutes.
How does the mass of the cathode change with time?
How does the mass of the cathode change with time?
- It increases, but the rate of increase gets smaller with time.
- It increases at a constant rate with time.
- It stays constant with time.
- It decreases at a constant rate with time.
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