A certain half-reaction has a standard reduction potential "red = +0.84 V. An engineer proposes using this half-reaction at the anode of a galvanic cell that must provide at least 0.50 V of electrical power. The cell will operate under standard conditions. FO

Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter17: Electrochemistry
Section: Chapter Questions
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Ag+(aq)+e-→Ag(s) 0.800
Al3+(aq)+3e-→Al(s) -1.676
Au+(aq)+e-→Au(s) 1.692
Au3+(aq)+3e-→Au(s) 1.498
Ba2+(aq)+2e-→Ba(s) -2.912
Be2+(aq)+2e-→Be(s) -1.847
Br2(l)+2e-→2Br-(aq) 1.066
Ca2+(aq)+2e-→Ca(s) -2.868
Cd2+(aq)+2e-→Cd(s) -0.403
Ce4+(aq)+e-→Ce3+(aq) 1.72
Cl2(g)+2e-→2Cl-(aq) 1.358
Co2+(aq)+2e-→Co(s) -0.28
Co3+(aq)+e-→Co2+(aq) 1.92
Cr2+(aq)+2e-→Cr(s) -0.913
Cr3+(aq)+e-→Cr2+(aq) -0.407
Cr3+(aq)+3e-→Cr(s) -0.744
CrO42-(aq)+4H2O(l)+3e-→Cr(OH)3(s)+5OH-(aq) -0.13
Cr2O72-(aq)+14H+(aq)+6e-→2Cr3+(aq)+7H2O(l) 1.36
Cu+(aq)+e-→Cu(s) 0.521
Cu2+(aq)+e-→Cu+(aq) 0.153
Cu2+(aq)+2e-→Cu(s) 0.342
F2(g)+2e-→2F-(aq) 2.866
Fe2+(aq)+2e-→Fe(s) -0.447
Fe3+(aq)+e-→Fe2+(aq) 0.771
Fe3+(aq)+3e-→Fe(s) -0.037
2H+(aq)+2e-→H2(g) 0.000
2H2O(l)+2e-→H2(g)+2OH-(aq) -0.828
H2O2(aq)+2H+(aq)+2e-→2H2O(l) 1.776
Hg2+(aq)+2e-→Hg(l) 0.851
2Hg2+(aq)+2e-→Hg22+(aq) 0.92
Hg22+(aq)+2e-→2Hg(l) 0.797
I2(s)+2e-→2I-(aq) 0.536
2IO3-(aq)+12H+(aq)+10e-→I2(s)+6H2O(l) 1.195
K+(aq)+e-→K(s) -2.931
Li+(aq)+e-→Li(s) -3.040
Mg2+(aq)+2e-→Mg(s) -2.372
Mn2+(aq)+2e-→Mn(s) -1.185
MnO2(s)+4H+(aq)+2e-→Mn2+(aq)+2H2O(l) 1.224
MnO4-(aq)+8H+(aq)+5e-→Mn2+(aq)+4H2O(l) 1.507
MnO4-(aq)+2H2O(l)+3e-→MnO2(s)+4OH-(aq) 0.595
HNO2(aq)+H+(aq)+e-→NO(g)+H2O(l) 0.983
N2(g)+5H+(aq)+4e-→N2H5+(aq) -0.214
N2(g)+4H2O(l)+4e-→4OH-(aq)+N2H4(aq) -1.16
NO3-(aq)+4H+(aq)+3e-→NO(g)+2H2O(l) 0.957
Na+(aq)+e-→Na(s) -2.71
Ni2+(aq)+2e-→Ni(s) -0.257
O2(g)+2H+(aq)+2e-→H2O2(aq) 0.695
O2(g)+4H+(aq)+4e-→2H2O(l) 1.229
O2(g)+2H2O(l)+4e-→4OH-(aq) 0.401
O3(g)+2H+(aq)+2e-→O2(g)+H2O(l) 2.076
Pb2+(aq)+2e-→Pb(s) -0.126
PbO2(s)+4H+(aq)+SO42-(aq)+2e-→PbSO4(s)+2H2O(l) 1.691
PbSO4(s)+H+(aq)+2e-→Pb(s)+HSO4-(aq) -0.359
HSO4-(aq)+3H+(aq)+2e-→H2SO3(aq)+H2O(l) 0.172
SO42-(aq)+4H+(aq)+2e-→SO2(g)+2H2O(l) 0.172
Sc3+(aq)+3e-→Sc(s) -2.077
Sn2+(aq)+2e-→Sn(s) -0.138
Sn4+(aq)+2e-→Sn2+(aq) 0.151
Sr2+(aq)+2e-→Sr(s) -2.899
VO2+(aq)+2H+(aq)+e-→VO2+(aq)+H2O(l) 0.991
Zn2+(aq)+2e-→Zn(s) -0.762
Is there a minimum standard reduction
potential that the half-reaction used at
the cathode of this cell can have?
If so, check the "yes" box and calculate
the minimum. Round your answer to 2
decimal places. If there is no lower
limit, check the "no" box.
Is there a maximum standard reduction
potential that the half-reaction used at
the cathode of this cell can have?
If so, check the "yes" box and calculate
the maximum. Round your answer to 2
decimal places. If there is no upper
limit, check the "no" box.
By using the information in the ALEKS
Data tab, write a balanced equation
describing a half reaction that could be
used at the cathode of this cell.
Note: write the half reaction as it would
actually occur at the cathode.
Oyes, there is a minimum.
0
no minimum
yes, there is a maximum.
no maximum
0
Ered = v
0
E
red
=
Ov
Transcribed Image Text:Is there a minimum standard reduction potential that the half-reaction used at the cathode of this cell can have? If so, check the "yes" box and calculate the minimum. Round your answer to 2 decimal places. If there is no lower limit, check the "no" box. Is there a maximum standard reduction potential that the half-reaction used at the cathode of this cell can have? If so, check the "yes" box and calculate the maximum. Round your answer to 2 decimal places. If there is no upper limit, check the "no" box. By using the information in the ALEKS Data tab, write a balanced equation describing a half reaction that could be used at the cathode of this cell. Note: write the half reaction as it would actually occur at the cathode. Oyes, there is a minimum. 0 no minimum yes, there is a maximum. no maximum 0 Ered = v 0 E red = Ov
A certain half-reaction has a standard reduction potential E
+0.84 V. An engineer proposes using this half-reaction at the anode of a galvanic cell that must
provide at least 0.50 V of electrical power. The cell will operate under standard conditions.
red
Note for advanced students: assume the engineer requires this half-reaction to happen at the anode of the cell.
=
Transcribed Image Text:A certain half-reaction has a standard reduction potential E +0.84 V. An engineer proposes using this half-reaction at the anode of a galvanic cell that must provide at least 0.50 V of electrical power. The cell will operate under standard conditions. red Note for advanced students: assume the engineer requires this half-reaction to happen at the anode of the cell. =
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