In the 1.0 M CuSO4 solution, the following species are present: Cu²+, SO4², H₂O, H³O*, and OH*. Based on the observed changes that occurred in each electrode, write the RHR, OHR, and the balanced overall reaction of the electrolytic cell. The reactions should be consistent with the observations.
In the 1.0 M CuSO4 solution, the following species are present: Cu²+, SO4², H₂O, H³O*, and OH*. Based on the observed changes that occurred in each electrode, write the RHR, OHR, and the balanced overall reaction of the electrolytic cell. The reactions should be consistent with the observations.
Chapter18: Electrochemistry
Section: Chapter Questions
Problem 115AE: The saturated calomel electrode. abbreviated SCE. is often used as a reference electrode in making...
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Transcribed Image Text:In the 1.0 M CuSO4 solution, the following species are present: Cu²+, SO4², H₂O, H³O+, and OH. Based on the
observed changes that occurred in each electrode, write the RHR, OHR, and the balanced overall reaction of the
electrolytic cell. The reactions should be consistent with the observations.
Transcribed Image Text:refer to the following Setups:
Anode
Electrodes
Carbon
Solution
1.0 M CUSO4
1.0 M CUSO4
Current
1.50 A
2.00 A
Time
10.00 minutes
10.00 minutes
experimental data:
Table 8b-1. Data on the electrolysis of aqueous copper(II) sulfate.
Parameter
Setup 1
Setup 2
14.62
13.12
Initial mass of anode (g)
Initial appearance of anode
Final mass of anode (g)
Black-colored rod
13.14
Black-colored rod
14.63
Part of electrode that
was
submerged was
became a little darker;
bubble formation was
observed
during
electrolysis; electrolyte
solution became acidic
after electrolysis.
Part of electrode that
was
submerged
became a little darker;
bubble formation was
observed
during
electrolysis; electrolyte
solution became acidic
after electrolysis.
14.23
Black-colored rod
Setup 3
12.76
Black-colored rod
12.76
Part of electrode that
submerged
became a little darker;
bubble formation was
observed
during
electrolysis; electrolyte
solution became acidic
after electrolysis.
Observations at the anode
15.46
15.42
Initial mass of cathode (g)
Initial appearance of cathode
Final mass of cathode (g)
Black-colored rod
Black-colored rod
15.91
14.48
16.25
Reddish brown solids
Final appearance of cathode
Reddish brown solids
Reddish brown solids
deposited on the deposited on the deposited on the
surface
surface
surface
Setup 1
Cathode
Carbon
Setup 2
Anode Cathode
Carbon
Carbon
Setup 3
Anode
Carbon
Cathode
Carbon
1.0 M CUSO4
2.00 A
20.00 minutes
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