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Understanding Acid-Base Equilibria and Titration Curves

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  1. k = Ae-Ea/RT

  2. Titration Curves Weak acid with strong base: Strong acid with weak base: http://www.chemguide.co.uk/physical/acidbaseeqia/phcurves.html

  3. Acid-base Equilibria Important Equations: 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-

  4. 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:

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