At equilibrium: Q= K; Ecell= 0
ln.
nE
K 0 0257cell
:
%
- OIL RIG: Oxidation Is Losing; Reduction Is Gaining (electrons)
- AN OX (ANode is where OXidation occurs)
RED CAT (REDuction occurs at the CAThode) - Electrolytic cell — electrical energy is used to bring about a nonspontaneous electrical
change. Anode is (+) electrode; cathode is (−) electrode. - Voltaic (chemical) cell — electrical energy is produced by a spontaneous redox reaction.
Anode is (−) terminal; cathode is (+) terminal. - Relation Between ∆G, K, and E°cell
∆GKE°cell Reaction Under Standard State Conditions
− >1 + Spontaneous
0 =1 0 Equilibrium
+<1− Nonspontaneous; spontaneous in reverse direction
Part II: Specific Topics