Name and Signature: ____________________CYS: _____________________
Instructor/Professor:_____________________ Date Submitted: __________
EXPERIMENT No. 7
ELECTROLYTIC CELL
OBJECTIVES:
At the end of this experiment, the students are expected to:
1. Plate metal samples with copper using acid Cu+2 plating solution.
2. Compare the mass change on the electrodes during electrolysis of an aqueous
CuSO4 solution.
3. Enumerate and discuss the factors affecting the amount deposition.
4. Verify the applicability of the acid sulfate solution in plating the different metals
commonly used in industry.
PROCEDURE:
Electroplating of Samples Using Acid Sulfate Solution
1. Clean, wipe dry and weigh the metal to be used. Record the initial mass of the
metal to be plated.
2. Place 250 mL of the acid Cu+2 plating solution in a 500 mL beaker.
3. Attach the metal to be plated using the alligator clips to the negative terminal of
the power source (cathode) and the plating metal to the positive terminal
(anode).
4. Dip the plating metal (anode) and the metal to be plated (cathode) in the plating
solution.
5. Close the circuit and run the plating process.
6. Record the amount of current used and the time that has elapsed after each
set-up.
7. After each plating process, wash the plated metals with water and let them dry.
8. Weigh the dried plated metals and record the mass (final mass of the plated
metal)
9. Applying Faraday’s Law of Electrolysis, compute the theoretical mass of copper
deposited on the metal sample using the respective average current used.
10. Compute for the % error.
References:
Set- up A: https://www.youtube.com/watch?v=-h8J56RC9oE
Set - up B: https://www.youtube.com/watch?v=uNfK-tu0pKI
Set-up:
DATA AND RESULTS
SET – UP A
Amount of Current Used
Time Elapsed
Initial Mass of the Metal to
be Plated
Final Mass of the Metal
Plated
Amount of Mass Deposited
(Experimental)
Amount of Mass Deposited
(Theoretical)
% Error
SET-UP B