CH-1811
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 anode is recorded every 5 minutes.
How does the mass of the anode change with time?
How does the mass of the anode change with time?
- It decreases in a straight line with constant slope.
- It decreases quickly at first, then levels off to a constant value.
- It stays constant throughout the electrolysis.
- It increases in a straight line with constant slope.
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