Question

1. Using a table of reduction potentials from your lecture textbook. Find a species that would pair well with an iron electrode (Fe/Fe") to form a spontaneous reaction. What would Eºcell for this voltaic cell. 2. Using your own words, equate the Eºcell of a voltaic cell to AG (Gibb's free energy). How are they similar? Draw a schematic if necessary. 3. List two different possible experimental errors that could have led to the error in your calibration curve. How could you correct these issues in the future?

Answer 1

Greater the reduction potential, reduction takes place on that elechode. Fest IFe = Eredu = -0.036 v The elechode which has reduction potential can coupled with this . greater the E Festlife Cu2+ Im Agt lag Ered = 0.36 Ered = d.gov have greater reduction potential Any electrode can be Coubled which Cell representiam Feal Fest (ap) || Agtas / Ag (4) Anode Feco) - fed"cal.) +de- t° = 0.036 Cathode 3 Ng7 +3e- - 347 (s) 6° = 0.80 Net reachim fe (8) + 3 Agtrap.) — Fe 3+ (ap.) + 3 AJ S) Ecem = E° oxidatim potentine + Ereduchin potential = 0.036 +0:80 =0,836V if Eul>o so the cell is spontenous so true = 0.836 Answer And ceel is spontenous.