a.) Calculate the E°cell for the following equation. Use these standard potentia

Question

a.) Calculate the E°cell for the following equation. Use these standard potentials . ( https://sites.google.com/site/chempendix/potentials  )
b.)A galvanic (voltaic) cell consists of an electrode composed of iron in a 1.0 M iron(II) ion solution and another electrode composed of silver in a 1.0 M silver ion solution, connected by a salt bridge. Calculate the standard potential for this cell at 25 °C. Standard reduction potentials can be found above.

What is this E*cell I have to find in both. I don't even know where to start. Please explain.

Explanation / Answer

Fe (s) --------------> Fe+2 + 2e-                    Eo = - 0.44 V

2Ag+ + 2e-   -------------> 2 Ag (s)              Eo = 0.80 V

Eo cell = Eo cathode - Eo anode

            = 0.80 - (- 0.44)

           = 1.24 V

Ecell = Eo - 0.0591 / n log [Fe+2]/[Ag+]^2

          = 1.24 - 0.05916 / 2 log [1/1]

         = 1.24 V

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