3. k = Ae-Ea/RT

12. Titration Curves Weak acid with strong base:
Strong acid with weak base:

13. Acid-base Equilibria Important Equations: H2O  H+ + OH-
Self-ionization of water:
H2O  H+ + OH-
Kw = [H+][OH-] = 1.0 x 10-14
Acid dissociation:
HA + H2O  H3O+ + A-
HA  H+ + A-
Base dissociation (e.g. NaOH, KOH):
BOH  B+ + OH-
Base hydrolysis (e.g., NH3):
B + H2O  BH+ + OH-

14. Acid-base Equilibria (cont’d)
Hydrolysis of the conjugate base of an acid:
A- + H2O  HA + OH-
Note that:
= [H+][OH-] = Kw
In a buffer system: