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Homework Help: Calculate mw of unknown using titration

  1. Sep 27, 2012 #1
    1. The problem statement, all variables and given/known data

    Calculate the molecular weight of unknown acid by titrating with 2N H2PO4 and 2N NaOH

    2. Relevant equations

    ph = pka + log[a-]/[ha]

    3. The attempt at a solution

    So i graphed titration with both acid and base with equivalents used vs ph, how would i use the number of equivalents (and total number of inflections in curve) to get molecular weight?
  2. jcsd
  3. Sep 27, 2012 #2


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    Gold Member

    Convert Normality to Molarity.
  4. Sep 28, 2012 #3


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    Staff: Mentor

    Not enough data. Please explain what the question is and what is the data that you are given. Or are you asked to design a procedure for determining molar mass of the acid?
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