E. Marcus De Said was a throw back to the OLD CORPS(E) and after graduation foun

Question

E. Marcus De Said was a throw back to the OLD CORPS(E) and after graduation found his true calling. This was as a torture expert for 3rd world drug lords. His specialty was in setting up dental voltaic cells. Aluminum metal in contact with a dental amalgam (filling) can set up a voltaic cell. Please calculate potential (E degree_cell) for the following set of equations. 4Al(s) + 3 O_2(g) + 12 H_3O^1+ rightarrow 18 H2O(l) + 4 Al^3+(aq) O_2(g) + 4 H3_O^1+ + 4 e^1- rightarrow 6 H_2O(l) E degree = 1.23 V (cathode) Al^3+(aq) + 3 e^1- rightarrow Al(s) E degree = -1.66 V (anode)

Explanation / Answer

Eocell = Eocathode - Eoanode

      Eocell = 1.23v -(-1.66V)

Eocell = 2.89V

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