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10 Nov 2019
1) write the reduction half-reaction 2) a) b) 3) 4) 1. Write the reduction half-reaction for a Pb2-/Pb(s) half-cell. 2. Consider the construction of a voltaic cell with Pb(s)Pb' (aq) and Cu?"(aq)/Cu(s) half- cells. If you connect the Pb(s) electrode to the red (cathode) lead and the Cu(s) electrode to the black (anode) lead and the measured Ean shows a positive voltage, what half- cell is undergoing oxidation? a. b. If you connect the Pb(s) electrode to the red (cathode) lead and the Cu(s) electrode to the black (anode) lead and the measured Enm shows a negative voltage, what half- cell is undergoing oxidation? Find the literature values for E red of Pb2 /Pb(s) and Fe? /Fe(s). Based on that data, predict the E° on for the following voltaic cell; show your work: 3. Fe(s) | Fe?(1M) II Pb2 (1M) | Pb(s) Using the literature E ed values and applying the Nernst equation, calculate the concentration of Pb needed to make the following battery: 4. Pb(s) | Pb2 (unknown concentration) II Pb*(1M) Pb(s) Enn 0.059 V
1) write the reduction half-reaction
2) a) b)
3)
4)
1. Write the reduction half-reaction for a Pb2-/Pb(s) half-cell. 2. Consider the construction of a voltaic cell with Pb(s)Pb' (aq) and Cu?"(aq)/Cu(s) half- cells. If you connect the Pb(s) electrode to the red (cathode) lead and the Cu(s) electrode to the black (anode) lead and the measured Ean shows a positive voltage, what half- cell is undergoing oxidation? a. b. If you connect the Pb(s) electrode to the red (cathode) lead and the Cu(s) electrode to the black (anode) lead and the measured Enm shows a negative voltage, what half- cell is undergoing oxidation? Find the literature values for E red of Pb2 /Pb(s) and Fe? /Fe(s). Based on that data, predict the E° on for the following voltaic cell; show your work: 3. Fe(s) | Fe?(1M) II Pb2 (1M) | Pb(s) Using the literature E ed values and applying the Nernst equation, calculate the concentration of Pb needed to make the following battery: 4. Pb(s) | Pb2 (unknown concentration) II Pb*(1M) Pb(s) Enn 0.059 V
Patrina SchowalterLv2
29 Mar 2019