Calculate E cell and indicate whether the overall reaction shown is spontaneous ornonspontaneous.Overall reaction:2Cr3+(aq) + 61"(aq)- 2Cr(s) + 312(s)Table 11.1Standard Reduction Potentials at 25°C (298 K) for Many Common Half-reactionsHalf-reaction8° (V)Half-reactionE° (V)F2 + 2e 2FAg+eCo* + e - Co*H2O2 + 2H + 2eCe + e Ce+PbO2 + 4H + SO, + 2e →MnO +4H* + 3e MnO2 + 2H2O104 +2H + 2e IO3+ H2OMnO4 + 8H* + 5e Mn2 +4H,OAu* + 3e AuPbO2 + 4H* + 2e >Ch + 2e2.87O2 + 2H2O + 4e → 40HCu* + 2e → CuHg,Cl2 + 2e 2Hg + 2CAgCl + e-So, + 4H* + 2e H2SO, + H2OCu²* + e → Cu"2H +2e - H2Fe* + 3e FePb?* + 2e PbSn2+ + 2e → SnNi2+ +2e- Ni0.40- Ag*1.990.341.820.272H201.78Ag + Cl0.221.700.20PbSO, + 2H201.690.161.680.00-0.0361.601.51-0.131.50-0.14-0.23Pb2+ +2H2O1.46

The reaction is said to be spontaneous if Ecell is positive. The standard half cell reactions are…

Answered: Calculate E. and indicate whether the…

Calculate E. and indicate whether the overall reaction shown is spontaneous or cell nonspontaneous. Overall reaction: 2Cr3+(aq) + 61"(aq) 2Cr(s) + 312(s)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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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

Calculate E cell and indicate whether the overall reaction shown is spontaneous or
nonspontaneous.
Overall reaction:
2Cr3+(aq) + 61"(aq)
- 2Cr(s) + 312(s)
Table 11.1
Standard Reduction Potentials at 25°C (298 K) for Many Common Half-reactions
Half-reaction
8° (V)
Half-reaction
E° (V)
F2 + 2e 2F
Ag+e
Co* + e - Co*
H2O2 + 2H + 2e
Ce + e Ce+
PbO2 + 4H + SO, + 2e →
MnO +4H* + 3e MnO2 + 2H2O
104 +2H + 2e IO3+ H2O
MnO4 + 8H* + 5e Mn2 +4H,O
Au* + 3e Au
PbO2 + 4H* + 2e >
Ch + 2e
2.87
O2 + 2H2O + 4e → 40H
Cu* + 2e → Cu
Hg,Cl2 + 2e 2Hg + 2C
AgCl + e-
So, + 4H* + 2e H2SO, + H2O
Cu²* + e → Cu"
2H +2e - H2
Fe* + 3e Fe
Pb?* + 2e Pb
Sn2+ + 2e → Sn
Ni2+ +2e- Ni
0.40
- Ag*
1.99
0.34
1.82
0.27
2H20
1.78
Ag + Cl
0.22
1.70
0.20
PbSO, + 2H20
1.69
0.16
1.68
0.00
-0.036
1.60
1.51
-0.13
1.50
-0.14
-0.23
Pb2+ +2H2O
1.46

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