2 Ag+(aq) + Fe(s) --> 2 Ag(s) + Fe2+(aq)

Question

Which electrode is the anode, and which is the cathode.

and

In which directions do the cations and anions migrate through the solution?
cations

thanks

Answer 1

Write the two half equations.
Ag^+ + e ==> Ag
Fe==> Fe^+2 + 2e
Which one loses electrons. That is oxidation. Oxidation occurs at the anode.

The anode is - charge. Fe^2+ are increasing (which means more negative ions migrate to that half cell). Ag^+ is decreasing which means fewer negative ions needed in that half cell.