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Homework Help: Buffer Solutions

  1. Oct 27, 2008 #1
    I have a Question that I cannot figure out:

    Describe how to make a buffer with pHs of 4.2, 7.3, and 9.7. For each buffer, you will need to choose a different method. For ex., if you make a buffer using a conjugate pair, you cannot reuse this method for the other 2 buffers...

    I just dont know where to go w/ it?? I've used pH=pKa + log (base/acid) for the 4.2 buffer and am just stuck.....

  2. jcsd
  3. Oct 27, 2008 #2


    User Avatar

    Staff: Mentor

    Re: Making a Buffer Solution

    I think what they mean is that you have to use different conjugate pairs, buffer by definition contains conjugate pair, so you can't make one without one :wink:

    Please don't reuse old therads to ask new questions.
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