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

Buffer solution capacity determination

  1. Aug 24, 2012 #1
    I have 3 buffer solutions with 3 components each and 3 buffer solutions with 2 components. I want to compare the capacities.

    But first I want to understand what exactlycapacity is and how can I calculate it! I have this page:

    http://www.chembuddy.com/?left=pH-calculation&right=pH-buffer-capacity

    1) Consider eq. 9.10. for calculating buffer capacity:

    β=2.303(Kw/[H]+[H]+(Cbuf·KaH]

    How can one do a sum of Kw/[H] + [H]?
    Wouldn't it make you count two variables with different units? Like L/mol plus mol/L?

    2) if I calculate buffer capacity β using this formula what would I get? The amont of strong base or acid needed to add to 1L of buffer solution to change pH by 1 unit? Or not?

    Some wise words would be appriciated. A lot.
     
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted



Similar Discussions: Buffer solution capacity determination
  1. Buffer solution (Replies: 1)

  2. Buffer solutions (Replies: 7)

  3. Buffer solutions (Replies: 3)

  4. Buffer Solution (Replies: 7)

  5. Buffer solution (Replies: 2)

Loading...