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To prepare an effective buffer in a PH range less than 7 ,it is advisable to select a weak acid-conjugate base pair in which the pK(a) of the weak acid equals the desired PH (+-)1

Over what PH range is the acetic acid-acetate ion buffer most effective ?K(HC2H3O2)=1.8x10^-5

thank for helps =]

  • Chemistry -

    If Ka = 1.8E-5, then pKa = 4.74 so the range is 3.74 to 5.74

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