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Enough of a monoprotic acid is dissolved in water to produce a 0.0169 M solution. The pH of the resulting solution is 2.68. Calculate the Ka for the acid.

  • Chemistry - ,

    Convert pH 2.68 to (H^+) with
    pH = -log(H^+).
    Then HA --> H^+ + A^-
    Ka = (H^+)(A^-)/(HA)
    Substitute for (H^+) and (A^-). For (HA) substitute 0.0169-(H^+)

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