Answer:
D. mass of anode vs. time
Explanation:
In this electrolysis setup, copper(II) sulfate solution is electrolyzed using copper electrodes
At the anode, copper(II) ions are oxidized to form copper metal, which deposits on the anode, increasing its mass over time
The graph obtained when the mass of the anode is plotted against time would show a continuous increase in mass as copper metal is deposited on the anode
Therefore, the correct graph is option C, mass of anode vs. time