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% glycolic acid needed to replace 40% phosphoric acid

  1. Feb 6, 2016 #1
    1. The problem statement, all variables and given/known data
    What is the % glycolic acid needed to replace 40% phosphoric acid (assuming it is weight%)?

    2. Relevant equations


    3. The attempt at a solution
    I tried to solve this by first converting the Phosphoric acid weight% to mol/L for the phosphoric acid (5.11 mol/L)..
    Since phosphoric acid is triprotic, I just multiply by 3 the calculated Molarity of phosphoric acid for the molarity of glycolic acid ... I am not sure if i did it right...how do we find the answer?
     
  2. jcsd
  3. Feb 6, 2016 #2

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    Need some numbers. Your numbers. Not mine.
     
  4. Feb 6, 2016 #3
    That is all the numbers for the question...
     
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