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PH conceptual problem

  1. Apr 18, 2004 #1
    I know that Kw is equilibrium constant for water..

    but what is Ka and Kb? I Is Ka equilibrium constant for acid and Kb equilibrium constant for Kb? If so how can u find those??

    For example..here is an equation

    Kw = [OH-][H+] = 1e-14

    What is the Ka and the Kb?

    Someone told me that Kw=Ka*Kb...is that true?
  2. jcsd
  3. Apr 19, 2004 #2


    User Avatar

    simple answer would be yes, its true. :)

    "a" stands for acid and "b" stands for base dissociation.

    to find Ka or Kb simply times H2O by Kc, ie Kc*[H2O].
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