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Fundamentals of ElectrochemistryREBECCA FORLOINELAB PARTNER: DANAMARCH 10, 2015Having read the Georgia Institute of Technology Academic Honor code, I understand and accept my responsibility as a member of the Georgia Tech Community to uphold the Academic Honor Code at all times. In addition, I understand my options for reporting honor violations as detailed in the code.
Data and ResultsA.Data Tables and Plotsa.Unseparated Redox Reactionsi.Balanced Redox Reaction of Copper(II) with Aluminum Metal1.3+¿(aq)+¿(aq)+2Al¿2+¿(aq)+2Al(s)→3C u¿3C u¿ii.Observations of the Reaction of Copper(II) with Aluminum Metal1.A little bit of the Aluminum broke off and dissolved. There was fizzy bubbling and the Aluminum turned a black/red color.iii.Table 1. Electrolytic Production of IodineInitial pH6.04Final pH10.68Time of reaction (s)563b.Separated Redox Reactionsi.Table 2. Galvanic Cells with Copper, Zinc, and SilverCell NotationOverall ReactionnMeasured Ecell(V)Calculated Eºcell(V)Calculated Ecell (V)Zn|Zn2+(1M) || Cu|Cu2+(1M)Zn(s) + Cu2+(aq)+2e-Zn2+(aq)+Cu (s)+ 2e-20.851.101.10Zn|Zn2+(1M) || Cu|Cu2+(0.1M)Zn(s) + Cu2+(aq)+2e-Zn2+(aq)+Cu (s)+ 2e-20.891.101.13Cu|Cu2+(1M) ||Ag|Ag+(1M)2Ag+(aq)+ Cu (s)+ 2e-2Ag (s)+Cu2+(aq)+2e-20.380.460.46Cu|Cu2+(1M) ||Ag|Ag+(0.1M)2Ag+(aq)+ Cu (s)+ 2e-2Ag (s)+Cu2+(aq)+2e-20.350.460.40Cu|Cu2+(0.1M) ||Ag|Ag+(1M)2Ag+(aq)+ Cu (s)+ 2e-2Ag (s)+Cu2+(aq)+2e-20.430.460.49ii.Description of Volta’s Pile Battery1.We used two stacks and got a voltage of 0.73V and three stacksto obtain a voltage of 0.60V. The voltage decreased as we added cells. The maximum voltage we were able to obtain was0.73VB.Sample Calculationsa.Average current during the electrolytic production of iodinei.Change in pH = +4.64ii.Change in [OH-] = 0.000479Miii.Change in moles of OH- = 0.00957 = change in moles of electrons