Calculate the standard potential for the following galvanic cell: Fe (s) | Fe2 + (aq) || Ag + (aq) | Ag (s) which has the overall balanced equation: Fe (s) + 2Ag + (aq) →Fe2 + (aq) + 2Ag (s) Express your answer to three significant figures and include the appropriate units. View Available Hint (s)

E° = 1.24 V

Explanation:

Let's consider the following galvanic cell: Fe (s) | Fe²⁺ (aq) || Ag⁺ (aq) | Ag (s)

According to this notation, Fe is in the anode (where oxidation occurs) and Ag is in the cathode (where reduction occurs). The corresponding half-reactions are:

Anode: Fe (s) ⇒ Fe²⁺ (aq) + 2 e⁻

Cathode: Ag⁺ (aq) + 1 e⁻ ⇒ Ag (s)

The standard cell potential (E°) is the difference between the standard reduction potential of the cathode and the standard reduction potential of the anode.

E° = E°red, cat - E°red, an

E° = 0.80 V - (-0.44 V) = 1.24 V