Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Finding dissociation constant for f-

  1. Aug 28, 2016 #1
    If I'm given the dissociation constant for HF, how would I find the dissociation constant for F-?

    Thanks in advance.
     
  2. jcsd
  3. Aug 28, 2016 #2

    Borek

    User Avatar

    Staff: Mentor

    F- doesn't dissociate.
     
  4. Aug 28, 2016 #3
    So is it just the equal to the dissociation constant of the HF acid itself or something
     
  5. Aug 28, 2016 #4
    I didn't really get the question either
     
  6. Aug 28, 2016 #5

    Borek

    User Avatar

    Staff: Mentor

    My bet is that the question is related to the Bronsted-Lowry theory, just poorly worded.
     
  7. Aug 28, 2016 #6
    Can you explain what you mean
     
  8. Aug 29, 2016 #7

    Borek

    User Avatar

    Staff: Mentor

  9. Aug 29, 2016 #8
    Yes, but I don't see the correlation
     
  10. Aug 29, 2016 #9
    It simply states that the acids donate H+ and bases accept H+
     
  11. Aug 30, 2016 #10

    Borek

    User Avatar

    Staff: Mentor

  12. Sep 6, 2016 #11
    i understand the equation but im not sure how to determine H30 concentration and HA- Concentration with just the acid dissociation constant for hydrofluoric acid
     
  13. Sep 7, 2016 #12

    Borek

    User Avatar

    Staff: Mentor

    HA- or A-?

    Besides, just dissociation constant is not enough. You also need to know analytical (AKA total or formal) concentration of the acid. Then it is just a problem of finding pH of a solution of a weak acid, plenty of sites explaining how to do that (including the one I already linked to, just choose appropriate page using menu on the left).
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Finding dissociation constant for f-
  1. Complete Dissociation? (Replies: 11)

  2. When to use Kw and Ka (Replies: 6)

Loading...