Question
2 Ag+(aq) + Fe(s) --> 2 Ag(s) + Fe2+(aq)
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
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
Answers
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.
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.