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Cell Zn-Cu Cu-Pb Cu-Fe Zn-Pb Fe-Zn Fe-Pb EXP. 3 VOLTAIC CELLS POST-LAB REPORT WORKSHEETS Part 2 - Measurement of Cell Potentials 1. Note: Because [Fe²] # 0.5 M. the experimental voltages can be expected to deviate from the calculated voltages (using the Nernst equation) where Fe² half-cells are involved. Experimental Voltage Readings and Average 1.092+ 1,092 2 = 1.095 V 0.465 +0.465 2 = 0.465 V 0.028 +0017 = 00275V 0.6%0+ 0.628 20.629 V 0.321 +0.322 2 = 0.3215 V 0.002 1 0.004 2 At which metal does reduction occur? Cn Cult (agite →→→>Cur Си +0.16V Си +0.16V +0.16 V Zo -0.76V Zn -0.76✓ Pb At which metal does oxidation occur? -0.13V In Zn(a)+26 → zn (s) -0.76V Pb -0.13V Pb -0.13V Fe +0.77V +0.77V Fe Which metal is the stronger reducing agent? 2n -076 V Pb -0.13V Fe +0.77V Pb. -0.13 V Fe +0.77 Fe Calculated Voltage (assume 0.5 M) -0.003 V +0.77 +0.77 2. On the basis of the calculated voltages, write the order for the reducing strength of the four metals (Zn, Cu, Pb, Fe), in order of decreasing reducing strength.

Cell Zn-Cu Cu-Pb Cu-Fe Zn-Pb Fe-Zn Fe-Pb EXP. 3 VOLTAIC CELLS POST-LAB REPORT WORKSHEETS Part 2 - Measurement of Cell Potentials 1. Note: Because [Fe²] # 0.5 M. the experimental voltages can be expected to deviate from the calculated voltages (using the Nernst equation) where Fe² half-cells are involved. Experimental Voltage Readings and Average 1.092+ 1,092 2 = 1.095 V 0.465 +0.465 2 = 0.465 V 0.028 +0017 = 00275V 0.6%0+ 0.628 20.629 V 0.321 +0.322 2 = 0.3215 V 0.002 1 0.004 2 At which metal does reduction occur? Cn Cult (agite →→→>Cur Си +0.16V Си +0.16V +0.16 V Zo -0.76V Zn -0.76✓ Pb At which metal does oxidation occur? -0.13V In Zn(a)+26 → zn (s) -0.76V Pb -0.13V Pb -0.13V Fe +0.77V +0.77V Fe Which metal is the stronger reducing agent? 2n -076 V Pb -0.13V Fe +0.77V Pb. -0.13 V Fe +0.77 Fe Calculated Voltage (assume 0.5 M) -0.003 V +0.77 +0.77 2. On the basis of the calculated voltages, write the order for the reducing strength of the four metals (Zn, Cu, Pb, Fe), in order of decreasing reducing strength.

Principles of Instrumental Analysis
Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter23: Potentiometry
Section: Chapter Questions
Problem 23.14QAP
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Cell Zn-Cu Cu-Pb Cu-Fe Zn-Pb Fe-Zn Fe-Pb EXP. 3 VOLTAIC CELLS POST-LAB REPORT WORKSHEETS Part 2 - Measurement of Cell Potentials 1. Note: Because [Fe²] # 0.5 M. the experimental voltages can be expected to deviate from the calculated voltages (using the Nernst equation) where Fe²+ half-cells are involved. Experimental Voltage Readings and Average 1.092+ 1,092 2 = 1.095 V 0.465 +0.465 = 0.465 V 0.028 +0.027 = 00275V 0.6%0+ 0.628 20.629 V 0.321 +0.322 2 = 0.3215 V 0.002 1 0.004 2 At which metal does reduction occur? Ch Cult (agite →→→>Cur Си +0.16V Си +0.16V 40-160 Zn -0,76V Zn -0.76✓ Pb At which metal does oxidation occur? Zn Zn(a)+26 → In (s) -0.134 -0.76V Pb. -0.13V Pb +0.77V -0.13V Fe +0.77 Which metal is the stronger reducing agent? 2n -076 V Pb -0.13V Fe +0.77V Pb -0.13 V Fe +0.77 Fe Calculated Voltage (assume 0.5 M) -0.003 V +0.77 +0.77 2. On the basis of the calculated voltages, write the order for the reducing strength of the four metals (Zn, Cu, Pb, Fe), in order of decreasing reducing strength.
Transcribed Image Text:Cell Zn-Cu Cu-Pb Cu-Fe Zn-Pb Fe-Zn Fe-Pb EXP. 3 VOLTAIC CELLS POST-LAB REPORT WORKSHEETS Part 2 - Measurement of Cell Potentials 1. Note: Because [Fe²] # 0.5 M. the experimental voltages can be expected to deviate from the calculated voltages (using the Nernst equation) where Fe²+ half-cells are involved. Experimental Voltage Readings and Average 1.092+ 1,092 2 = 1.095 V 0.465 +0.465 = 0.465 V 0.028 +0.027 = 00275V 0.6%0+ 0.628 20.629 V 0.321 +0.322 2 = 0.3215 V 0.002 1 0.004 2 At which metal does reduction occur? Ch Cult (agite →→→>Cur Си +0.16V Си +0.16V 40-160 Zn -0,76V Zn -0.76✓ Pb At which metal does oxidation occur? Zn Zn(a)+26 → In (s) -0.134 -0.76V Pb. -0.13V Pb +0.77V -0.13V Fe +0.77 Which metal is the stronger reducing agent? 2n -076 V Pb -0.13V Fe +0.77V Pb -0.13 V Fe +0.77 Fe Calculated Voltage (assume 0.5 M) -0.003 V +0.77 +0.77 2. On the basis of the calculated voltages, write the order for the reducing strength of the four metals (Zn, Cu, Pb, Fe), in order of decreasing reducing strength.
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