Reading & Problems: Acid-Base section of handout book, LNC p. 58 -63, p. 71 prob. 2-11; Segel p. 91 prob. 5 (except “i”), 8, p. 92, prob. 24
Water dissociates to a very small extent. The concentrations of H+ and OH- in pure water are 10-7 M (this is one molecule dissociating among 5 X 108).
D. Buffers - mixtures of conjugate acid and conjugate base at ±1 pH unit from pH = pKa. Resistant to changes in pH in response to small additions of H+ or OH-.
Charles S. Gasser (Department of Molecular & Cellular Biology; UC Davis)