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Homework Help: [Chem] Buffer solution with acetic acid

  1. Apr 24, 2010 #1
    1. The problem statement, all variables and given/known data
    100mL of 0.10M HNO3 was added to a 100mL mixture containing 0.30M acetic acid and 0.10M sodium acetate.
    Ka = 1.8 x 10-5

    2. Relevant equations
    CH3COOH [tex]\rightarrow[/tex] H+ + CH3COO-
    CH3COONa [tex]\rightarrow[/tex] Na+ + CH3COO-

    CH3COO- + H+ [tex]\rightarrow[/tex] CH3COOH

    3. The attempt at a solution
    CH3COO- + H+ [tex]\rightarrow[/tex] CH3COOH
    I used the ICE table for this
    and it turns out that the molarity of CH3COO- and H+ are both = 0 at equilibrium...
  2. jcsd
  3. Apr 24, 2010 #2


    User Avatar

    Staff: Mentor

    Which suggests you have now solution of acetic acid and sodium nitrate... Take a look at stoichiometry of the mixture.

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