Question

1. Fill the table with the raw data collected from your copper electrolysis

Run #	Initial Anode Mass (g)	Final Anode Mass (g)	Initial Cathode Mass (g)	Final Cathode Mass (g)	Current (A)	Time (min)	Time (s)
1	11.5	11.005	10.5	10.995	5.00 Amps	5:00	300
2	11.5	10.762	10.5	11.238	2.50 A	15:00	900
3	11.5	10.906	10.5	11.094	1.00 A	30:00	1800

2. Calculate the experimental mass loss at the anode and the experimental mass gain at the cathode for each run from question 1.

Run #	Experimental Anode Mass Loss (g)	Experimental Cathode Mass Gain (g)	Current (A)	Time (s)
1	0.508	0.495	5.00	300
2	0.738	0.740	2.50	900
3	0.609	0.593	1.00	1800

3. Calculate the theoretical mass gain to the cathode for each run and the % efficiency of transfer

Run #	Experimental Cathode Mass Gain (g)	Theoretical Mass Gain at Cathode (g)	% Efficiency of Transfer	Current (A)	Time (s)
1
2
3

4. How long would it take to deposit the mass of the experimental mass gain of cathode from Run 1 during the electrolysis of copper if you used a current of 2.50 A? Please show your work.

5. How long would it take to deposit the mass of the experimental mass gain of cathode from Run 1 during the electrolysis of copper if you used a current of 1.00 A? Show your work.

6. What is the relationship between current and time for the same mass of copper from Run 1 to be deposited on the cathode? Use the data from Run 1 and answers to questions 4 and 5 in answering this; compile the data in the table below.

Current (A)	Time (min)	Mass transferred
		0.495 g
		0.495 g
		0.495 g