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surferchic1331
surferchic1331 asked in Science & MathematicsChemistry · 1 decade ago

A 0.200 M solution of HA is 5.0% ionized. Calculate the acid ionization constant for this acid.?

A 0.200 M solution of HA is 5.0% ionized. Calculate the acid ionization constant for this acid.

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  • Steve O
    Lv 7
    1 decade ago
    Favourite answer

    95% of 0.200 = 0.190 M HA remains

    5% 0f 0.200 = 0.010 M A- & H+

    HA --> H+ & A-

    0.190 --> 0.010 & 0.010

    Ka = [A-] [H+] / [HA]

    Ka = [0.010] [0.010] / [0.190]

    Ka = 5.26 e-4

    your answer, rounded to 2 sig figs is

    Ka = 5.3 X 10^-4

  • joanne
    5 years ago

    calculate ionization constant weak acid ha thatis 160 ionized 00950 solution

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