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Molecular Weight Question

  1. Mar 29, 2005 #1
    What is the molecular weight of potassium phosphate buffer pH 6.8 and pH 6.4? I tried to find the answer but no luck. Please help calculate. Thank you. :bugeye:
     
  2. jcsd
  3. Mar 29, 2005 #2
    K+ PO3(4-) MW: 212.28 ...... am I missing something here? how does mw change as pH changes?
     
  4. Mar 29, 2005 #3

    Gokul43201

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    It does not...and while you have the corrrect MW it looks like you may have mistyped the formula for [itex]K_3PO_4 [/itex]
     
  5. Mar 30, 2005 #4

    Borek

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    Buffers are mixtures so there is no such thing as molar mass. Molar concentration of buffer refers to the total concentration of both acid and conjugated base.


    Chemical calculators for labs and education
    BATE - pH calculations, titration curves, hydrolisis
     
  6. Mar 30, 2005 #5
    yes, I realized that.
     
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