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need the lab report form done, the lab itself is already done. no plagiarism and the work should not be posted online.

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1. Electrolysis of Coppe
Positive Post (Anode) Negative Post (Cathode)
Mass of Ce Electrode
Betore Elects | 7-89 3x9 b 2319 3
“ime of Eletrolysi
(minutes) 15 ming | 15 mins

Mass of Copper Electrode gegzar XXXXXXXXXXgett Gaz g
After Electrolysis
Mass change of Coppe
| Electrode (=)o XXXXXXXXXXFay
eine | ©001/3304 | 0-0al§5404 |
Charge transfe
ed during
Electrolysis

Total Cu
ent passed
through each electrode

% Difference in cu
ent
values
2. Qualitative evaluation of spontaneous and non-spontancous reactions
Mekal Fong Born Siler A» Black writ a
ln metatin CuSO soln | rust colored vesidue
Rast fom Ha 01 metal is being dlepasited
ln metalGraphite/ 5V 5
[pacers (CusOt soy | He greet

cu metal No cheng ¢
fin Zn(NO3)2 soln

[Cu metaliGraphite/ 9V | Aurand Slede ard solufion durned bl from
Graphite wos dissiping and Baty -
[Battery (Zn(NO3)2 soln) de (en

3. Voltaic cell potentials (raw data, XXXXXXXXXX)
Positive Terminal (+) Negative Terminal (-) Voltage (must be positive)
Copp Eine 0-61)
Copper Lead 0-353
Copper Tron 0-aal
Silvey Coppes— 23 ha
0.



Name                                    
Group             
    
Results
1. Electrolysis of Coppe
Positive Post (Anode)
Negative Post (Cathode)
Mass of Copper Electrode
Before Electrolysis
Time of Electrolysis
(minutes)
Mass of Copper Electrode
After Electrolysis
Mass change of Copper
Electrode
moles of Coppe
consumed/generated
Charge transfe
ed during
Electrolysis
Total Cu
ent passed
through each electrode
% Difference in cu
ent
values
2. Qualitative evaluation of electrolytic and voltaic cells.
Electrode
Observations
Zn metal
in CuSO4 solution
Zn metal/Graphite
9V Battery
(CuSO4 solution)
Cu metal
in Zn(NO3)2 solution
Cu metal/Graphite
9V Battery
(Zn(NO3)2 solution)
3. Voltaic cell potentials (raw data, XXXXXXXXXX)
Positive Terminal (+)
Negative Terminal (-)
Voltage (must be positive)
Voltaic cell potentials ordered (including Cu/Cu2+; 3.5)
Positive Terminal (+)
Negative Terminal (-)
Voltage (must be positive)
4. Reduction Potentials XXXXXXXXXX)
Metal Reduction Potential
Reduction Potential (Cu reference) (4/7)
Adjusted Reduction Potential (Hydrogen reference – +0.34V)
Reduction Potential from table (Chang p766)
% E
o
Questions
1.    Write the overall chemical reaction for each voltaic cell examined (note that there must be both an oxidation and a reduction).
1.    What did you observe in the qualitative evaluation of voltaic and electrolytic cells. Identify all cells that were voltaic and all cells that were electrolytic. For one of the electrolytic cells explain how you could prepare a voltaic cell from the same materials.
1.    Using standard cell reduction potentials indicate the voltage expected for each of the following cells under standard conditions. Label each cell as voltaic or electrolytic.
a)    Cr(s) | Cr3+(aq) || Hg22+(aq) | Hg(l)
a)    I-(aq) | I2 (s) || S2O82-(aq) | SO42-(aq) (Where have you seen this reaction before?)
a)    Al(s) | Al3+(aq) || F2 (g) | F_(aq)
a)    Br-(aq) | Br2 (l) || Cl2 (g) | Cl-(aq)
Answered 1 days After May 08, 2024

Solution

Dr Shweta answered on May 10 2024
13 Votes
Name                                    
Group             
    
Results
1. Electrolysis of Coppe
Positive Post (Anode)
Negative Post (Cathode)
Mass of Copper Electrode
Before Electrolysis
7.2922 g
6.2219 g
Time of Electrolysis
(minutes)
15 mins
15 mins
Mass of Copper Electrode
After Electrolysis
7.2202 g
6.3143 g
Mass change of Copper
Electrode
- 0.072
+ 0.0924
moles of Coppe
consumed/generated
0.00113304
0.00145406
Charge transfe
ed during
Electrolysis
3.4437 Coulombs
4.419 Coulombs
Total Cu
ent passed
through each electrode
0.0038 Amp
0.0049 Amp
% Difference in cu
ent
values
0.296%
0.309%
2. Qualitative evaluation of electrolytic and voltaic cells.
Electrode
Observations
Zn metal in CuSO4 solution
Metal changed from silver to black with a rust colored residue
Zn metal/Graphite
9V Battery
(CuSO4 solution)
Rust from the zinc metal is being deposited on the graphite
Cu metal
in Zn(NO3)2 solution
No change
Cu metal/Graphite
9V Battery
(Zn(NO3)2 solution)
Graphite was dissipating and bu
ling, copper turned black and solution turned black from clea
3. Voltaic cell potentials (raw data, 3.3-3.4)
Positive Terminal (+)
Negative Terminal (-)
Voltage (must be positive)
Coppe
Zinc
0.611
Coppe
Lead
0.353
Coppe
Iron
0.021
Silve
coppe
0.305
Voltaic cell potentials ordered (including Cu/Cu2+; 3.5)
Positive Terminal (+)
Negative...
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