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Data Sheet Cell Operation and Efficiency Determination Cell Reduction Oxidation 1.0MCuSO4 Cu||Zn |1.0M ZnSO4 1.0MCuSO4 Cu||Ni |1.0M NiSO4 1.0MCuSO4 Cu||Mg |1.0M MgSO4 Observed Calculated Potential, V Potential, V 1.10 0.33 2.13 1.10 0.62 2.71 Cell Efficiency, % 100% 53.2% 78.6%

Data Sheet Cell Operation and Efficiency Determination Cell Reduction Oxidation 1.0MCuSO4 Cu||Zn |1.0M ZnSO4 1.0MCuSO4 Cu||Ni |1.0M NiSO4 1.0MCuSO4 Cu||Mg |1.0M MgSO4 Observed Calculated Potential, V Potential, V 1.10 0.33 2.13 1.10 0.62 2.71 Cell Efficiency, % 100% 53.2% 78.6%

Chemistry
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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Write out the chemical equation for the equilibrium in each cup. Be sure to include electrons on the proper side of the equation (you may find it useful to look at the Standard Potential table (below).

Data Sheet Cell Operation and Efficiency Determination Cell Reduction Oxidation 1.0MCuSO4| Cu||Zn |1.0M ZnSO4 + 1.0MCuSO4| Cu||Ni |1.0M NISO4 1.0MCuSO4| Cu||Mg |1.0M MgSO4 1.0MNiSO4| Ni||Mg |1.0M MgSO4 1.0MZnSO4| Zn||Mg |1.0M MgSO4 Observed Potential, V 1.10 0.33 2.13 1.98 0.93 Calculated Potential, V 1.10 0.62 2.71 2.12 1.61 Cell Efficiency, % 100% 53.2% 78.6% 93.4% 57.8%
Transcribed Image Text:Data Sheet Cell Operation and Efficiency Determination Cell Reduction Oxidation 1.0MCuSO4| Cu||Zn |1.0M ZnSO4 + 1.0MCuSO4| Cu||Ni |1.0M NISO4 1.0MCuSO4| Cu||Mg |1.0M MgSO4 1.0MNiSO4| Ni||Mg |1.0M MgSO4 1.0MZnSO4| Zn||Mg |1.0M MgSO4 Observed Potential, V 1.10 0.33 2.13 1.98 0.93 Calculated Potential, V 1.10 0.62 2.71 2.12 1.61 Cell Efficiency, % 100% 53.2% 78.6% 93.4% 57.8%
In the Table 1, standard reduction potentials, also called standard electrode potentials, are given for the electrodes using in this experiment. Table 1. Standard Electrode Potentials at 25°C Standard potential, V 0.34 Cu²+ (aq) + 2e Ni²+ (aq) + 2e Zn²+ (aq) + 2e Mg²+ (aq) + 2e Mg(s) For oxidation half-cell reactions (Table 2), standard oxidation potentials are equal in magnitude but opposite in sign to the reduction potentials for the same half-cell reactions Table 2. Standard Electrode Potentials at 25°C - 0.28 -0.76 -2.37 Standard potential, V - 0.34 0.28 0.76 Reduction half-reaction 2.37 Oxidation half-reaction Cu(s) Ni(s) Cu(s) Ni(s) Zn(s) Zn(s) Mg(s) Cu²+ (aq) + 2e Ni²+ (aq) + 2e Zn²+ (aq) + 2e Mg²+ (aq) + 2e
Transcribed Image Text:In the Table 1, standard reduction potentials, also called standard electrode potentials, are given for the electrodes using in this experiment. Table 1. Standard Electrode Potentials at 25°C Standard potential, V 0.34 Cu²+ (aq) + 2e Ni²+ (aq) + 2e Zn²+ (aq) + 2e Mg²+ (aq) + 2e Mg(s) For oxidation half-cell reactions (Table 2), standard oxidation potentials are equal in magnitude but opposite in sign to the reduction potentials for the same half-cell reactions Table 2. Standard Electrode Potentials at 25°C - 0.28 -0.76 -2.37 Standard potential, V - 0.34 0.28 0.76 Reduction half-reaction 2.37 Oxidation half-reaction Cu(s) Ni(s) Cu(s) Ni(s) Zn(s) Zn(s) Mg(s) Cu²+ (aq) + 2e Ni²+ (aq) + 2e Zn²+ (aq) + 2e Mg²+ (aq) + 2e
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