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Homework Help: Ph scale logarithms

  1. Aug 20, 2014 #1
    How do I work out how many times more acidic a ph value of 6.8 is compared to 8.6? For example.
  2. jcsd
  3. Aug 20, 2014 #2
    Ps I'm not au fait with the formula shortcuts and they don't display on my iPhone so if this can be avoided It would be much appreciated.

  4. Aug 20, 2014 #3


    Staff: Mentor

  5. Aug 20, 2014 #4
  6. Aug 20, 2014 #5


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    Staff: Mentor

    Concentration of H+ is about 63 times higher at pH 6.8 than it is at pH 8.6, that's correct. Whether the solution is 63 times more acidic depends on how you define "acidity".
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