Using oxalic acid as a primary standard

  • Thread starter danago
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  • #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.
 

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  • #2
chemisttree
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It is available as a standard solution from Aldrich (Fixanal).
 
  • #3
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What is forumla of oxalic acid?
 
  • #4
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formula of oxalic acid is HOOC-COOH (ethanedicarboxylic acid)
 
  • #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.
 
  • #6
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yes. I have done titration of oxalic acid with potassium permanganate (KMnO4;it is a self indicator)
 
  • #7
danago
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yes. I have done titration of oxalic acid with potassium permanganate (KMnO4;it is a self indicator)
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
 
  • #8
Borek
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It works for alkalimetry as well. Just remember to dry it to be sure it is exactly dihydrate.
 
  • #9
danago
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ok thats the answer i was after :) Thanks
 

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