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K-value missing in acid-base problem?

  1. Mar 16, 2014 #1
    What initial concentration of HF (aq) in water would give a solution with a pH = 1.5?

    I think the K value is missing... How could we solve this problem?
     
  2. jcsd
  3. Mar 18, 2014 #2
    Hey there!
    I'm sure you know the K of water - what you're looking for is the Ka value of HF. Have you not been given the value?
     
  4. Mar 18, 2014 #3

    Borek

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    Staff: Mentor

    Is there a table of Ka values in your book?
     
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