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Posted: **Wed May 18, 2022 11:47 am**

: 3 Voltaic Cell Potentials Raw Data 3 3 3 4 Voltage Must Be Positive Positive Terminal Negative Terminal 0 1 (44.63 KiB) Viewed 32 times

: 3 Voltaic Cell Potentials Raw Data 3 3 3 4 Voltage Must Be Positive Positive Terminal Negative Terminal 0 2 (27.37 KiB) Viewed 32 times

3. Voltaic cell potentials (raw data, 3.3-3.4) Voltage (must be positive) Positive Terminal (+) Negative Terminal (-) 0.92 V (Video 3 @ 2:45) Copper Zinc 0.48 V (Video 3 @ 3:06) Copper Lead 0.46 V (Video 3 @ 3:32) Copper Iron* (note Fe3+) I 0.40 V (not in Video 3) Silver Copper * Note: The standard reduction potential for Iron (III) in aqueous solution to elemental iron is not in Appendix A6.1 in the Gilbert 6th Ed book. Use the value below: Fe3+ + 3e Fe(s) Ered = -0.04 V
Reduction Potentials (4.5-4.8) Metal Reduction Potential (4.5) (Cu reference) Reduction Potential (4.7) (Hydrogen reference) Percent error between values (4.8) Reduction Potential from Table (Appendix A6.1 in G6) or Lecture Electrochemistry Zinc 0.92 V 0.347 +0.92V - |-0.762 -1.26/0.726 x 100