Voltaic Cells (Section)A voltaic cell similar to that shown in Figure is constructed. One...

Voltaic Cells (Section)

A voltaic cell similar to that shown in Figure is constructed. One electrode half-cell consists of a silver strip placed in a solution of AgNO3, and the other has an iron strip placed in a solution of FeCl2. The overall cell reaction is

Figure A voltaic cell that uses a salt bridge to complete the electrical circuit.

How is electrical balance maintained in the left beaker as Zn2+ are formed at the anode?

Fe(s) + 2 Ag+(aq) → Fe2+(aq) + 2 Ag(s)

(a) What is being oxidized, and what is being reduced? (b) Write the half-reactions that occur in the two half-cells. (c) Which electrode is the anode, and which is the cathode? (d) Indicate the signs of the electrodes. (e) Do electrons flow from the silver electrode to the iron electrode or from the iron to the silver? (f) In which directions do the cations and anions migrate through the solution?