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h. Clip the penny into the red electrode and clip the dime into the black electrode (Figure 7). AB OPTIONAL step to be completed before inserting wires into cardboard: Weigh each coin/copper wire assembly (penny/red wire/red clip; dime/black wire/black clip) separately and record the mass. Figure 6. A) Unattached copper wires; B) copper wires attached to Figure 7. Complete wire assembly: red and alligator clips. black wires pushed through cardboard with alligator clips attached and coins inserted. 3. Pour 150 mL of the copper sulfate electrolyte solution into the beaker. 4. Place the wire assembly over the beaker so that the coin "electrodes" are immersed in the electrolyte solution as illustrated in Figure 8. Note: the two electrode assemblies must not touch one another. 5. Clip each connecting wire to the terminals of the 9V battery: Clip the red to the positive terminal, and black to the negative terminal (Figure 9). AB Figure 8. Electrodes immersed in the electrolyte solution. Figure 9. A) Cross-section illustration of final complete copper electrolysis lab set-up. ; B) Actual photograph of complete copper electrolysis lab set-up.PDF Image | Chemistry of Copper Electrolysis
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