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What is the pH of a buffer solution made from 0.20M HC2H3O2 abd 0.5M C2H302^-.The ionization constant of the acid (Ka)(HC2H3O2)is 1.8multiplied by 10^-5.
(ii)Calculate the ionization constant of its conjugate base

  • chemistry -

    Use the Henderson-Hasselbalch equation to solve part 1.
    For part 2, the conjugate base (we'll call the molarity M) is
    ............A^- + HOH ==> HA + OH^-
    initial.....M..............0.....0
    change......-x.............x.....x
    equil......M-x.............x.....x

    Kb for the A^- base = (Kw/Ka for the HA).

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