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Homework Help: Analytical chem

  1. Oct 27, 2007 #1
    1. The problem statement, all variables and given/known data

    A solution is to be buffer at pH = 3:35 with formic acid and formate.
    (a) How many moles of formic acid and sodium formate are needed if the solution is to change pH by < 0:02
    for the addition of 0.02 moles of strong acid?

    i need help how to set up a problem like this, i dont even know how to approche it !!
  2. jcsd
  3. Oct 29, 2007 #2
    I think this might help. Henderson-Hasselbalch
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