Consider a galvanic cell based on the reactionZn + MnO, → Zn²* + Mn²+in acidic solution. Calculate the voltage of the standard cell carryingout this reaction.Half-ReactionHalf-ReactionF+ 2e2FAg* + eAgCo- + e- Co-H,O, + ZH + 2e2H,0Ce +eCePbO, + 4H + So,- + 2c¯ →PbSO, + 2H,0MnO, + 4H + 3eMnO, + 2H,02e + 2H + 10, →10,¯ + H,0MnO, + 8H + 5eMn + 4H,OAu + 3eAuPbO, + 4H + 2e¯Pb2* + 2H,0CI, + 2e 2C1¯Cr,0,- + 14H + 6e¯→2Cr* + 7H,00, + 4H* + 4e→ 2H,0MnO, + 4H + 2e Mn²* + 2H,010, + 6H + Se , + 3H,0Brz + 2e → 2B1¯VO,* + 2H* + ¢¯→VO²* + H;OAUCL + 3e→ Au + 4CINO, + 4H + 3eNO + 2H,0CIO, + eCIO,2Hg + 2eHg,*Ag+cAgHg, +2e2HgFe +eFe2+0, + 2H* + 2e→ H,O,MnO, + eMnO,-I + 2e 21Cu* +e→ Cu2.871.990, + 2H,0 + 4c→40HCu + 2eCuHg Cl, + 202H + 2CI¯A CI+eAg + ClSo-+4H +2e"→H,SO, + H,0Cu +e Cu2H +2eHFe + 30FePb + 2ePbSn + 2e SnNi + 20NIPbSO, + 20Pb + SO,-Cd* + 20 CdCr* +eCrFe + 2eFeCr + 3eCrZo* + 2e Zn2H,0 + 20H, + 20HMn +2eMnAl + 3eAIH, + 2e2HMg +2eMgLa +3eLaNa* + e+ NaCa + 20 CaBa +2eBaK + eKLi +eLi0.400.341.821.781.700.270.220.201.690.161.680.00-0.0361.601.511.50-0.13-0.141.46-0.231.36-0.35-0.40-041-0.44-0.731.331.231.211.201.09-0.76-0.831.00-L180.99-1.66-223-237-237-2710.960.9540.910.800.80-2.76-2.900.770.68-292-3.050.560.540.52charingHide

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Answered: Consider a galvanic cell based on the…

Consider a galvanic cell based on the reaction Zn + MnO4→ Zn²* + Mn²+ in acidic solution. Calculate the voltage of the standard cell carrying out this reaction.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter17: Electrochemistry And Its Applications

Section: Chapter Questions

Problem 46QRT

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Concept explainers

Electrolysis

Electrolysis is defined as the process of breaking down ionic compounds into their constituent elements by passing a direct electric current through the compound in a fluid state. The cathode reduces cations, while the anode oxidizes anions. An electrolyte, electrodes, and some form of external power source are the main components required for conducting electrolysis. A partition, such as an ion-exchange membrane or a salt bridge, may also be used, but this is optional. These are primarily used to prevent the products from diffusing near the opposing electrode.

Question

Consider a galvanic cell based on the reaction
Zn + MnO, → Zn²* + Mn²+
in acidic solution. Calculate the voltage of the standard cell carrying
out this reaction.
Half-Reaction
Half-Reaction
F+ 2e2F
Ag* + eAg
Co- + e- Co-
H,O, + ZH + 2e2H,0
Ce +eCe
PbO, + 4H + So,- + 2c¯ →PbSO, + 2H,0
MnO, + 4H + 3eMnO, + 2H,0
2e + 2H + 10, →10,¯ + H,0
MnO, + 8H + 5eMn + 4H,O
Au + 3eAu
PbO, + 4H + 2e¯Pb2* + 2H,0
CI, + 2e 2C1¯
Cr,0,- + 14H + 6e¯→2Cr* + 7H,0
0, + 4H* + 4e→ 2H,0
MnO, + 4H + 2e Mn²* + 2H,0
10, + 6H + Se , + 3H,0
Brz + 2e → 2B1¯
VO,* + 2H* + ¢¯→VO²* + H;O
AUCL + 3e→ Au + 4CI
NO, + 4H + 3eNO + 2H,0
CIO, + eCIO,
2Hg + 2eHg,*
Ag+cAg
Hg, +2e2Hg
Fe +eFe2+
0, + 2H* + 2e→ H,O,
MnO, + eMnO,-
I + 2e 21
Cu* +e→ Cu
2.87
1.99
0, + 2H,0 + 4c→40H
Cu + 2eCu
Hg Cl, + 202H + 2CI¯
A CI+eAg + Cl
So-+4H +2e"→H,SO, + H,0
Cu +e Cu
2H +2eH
Fe + 30Fe
Pb + 2ePb
Sn + 2e Sn
Ni + 20NI
PbSO, + 20Pb + SO,-
Cd* + 20 Cd
Cr* +eCr
Fe + 2eFe
Cr + 3eCr
Zo* + 2e Zn
2H,0 + 20H, + 20H
Mn +2eMn
Al + 3eAI
H, + 2e2H
Mg +2eMg
La +3eLa
Na* + e+ Na
Ca + 20 Ca
Ba +2eBa
K + eK
Li +eLi
0.40
0.34
1.82
1.78
1.70
0.27
0.22
0.20
1.69
0.16
1.68
0.00
-0.036
1.60
1.51
1.50
-0.13
-0.14
1.46
-0.23
1.36
-0.35
-0.40
-041
-0.44
-0.73
1.33
1.23
1.21
1.20
1.09
-0.76
-0.83
1.00
-L18
0.99
-1.66
-223
-237
-237
-271
0.96
0.954
0.91
0.80
0.80
-2.76
-2.90
0.77
0.68
-292
-3.05
0.56
0.54
0.52
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