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Using oxalic acid as a primary standard

  1. Mar 27, 2007 #1

    danago

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    Hi. Can oxalic acid be used as a primary standard to standardise a basic solution, such as sodium hydroxide?

    I cant think of any reason why it couldnt be used, but i could very much be missing something.
     
  2. jcsd
  3. Mar 27, 2007 #2

    chemisttree

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    It is available as a standard solution from Aldrich (Fixanal).
     
  4. Mar 28, 2007 #3
    What is forumla of oxalic acid?
     
  5. Mar 28, 2007 #4
    formula of oxalic acid is HOOC-COOH (ethanedicarboxylic acid)
     
  6. Mar 28, 2007 #5

    danago

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    Would it just be a standard acid base neutralization reaction, where the acid reacts with a base, such as NaOH, to form a salt, sodium oxalate, plus water. Id need to use an indicator such as phenolphthalein though, to indicate the end point of the titration.
     
  7. Mar 28, 2007 #6
    yes. I have done titration of oxalic acid with potassium permanganate (KMnO4;it is a self indicator)
     
  8. Mar 28, 2007 #7

    danago

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    yea so have i, but i was just wondering if it could be used as a primary standard with a basic solution, such as NaOH. I know it works with KMnO4
     
  9. Mar 28, 2007 #8

    Borek

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    It works for alkalimetry as well. Just remember to dry it to be sure it is exactly dihydrate.
     
  10. Mar 28, 2007 #9

    danago

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    ok thats the answer i was after :) Thanks
     
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