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PH sulfuric acid by volume

  1. Dec 2, 2009 #1
    Can anyone tell me what a 1% (mass or volume) sulfuric acid solution is in moles? I want to find out the pH of a 1% (mass or volume) sulfuric acid solution?
     
  2. jcsd
  3. Dec 3, 2009 #2

    Borek

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    Staff: Mentor

  4. Dec 7, 2009 #3
    Correct me if I'm wrong but...
    I think you can assume you have a solution 1L in volume. If 1% of that solution is sulfuric acid, you can find the molar concentration. Sulfuric acid is a strong acid so assume 100% dissociation of H+. Then just use the formula pH = -log([H+]) to get the pH.
     
  5. Dec 7, 2009 #4

    Borek

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    Staff: Mentor

    First dissociation step is strong, but the second is relatively weak. In this particular case about 76% is in the HSO4- form.

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