A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Photon336

  • one year ago

An acid with a Ka of 2x10^-6 is used to make a buffer. what is the approximate pH of the solution if the buffer has equal concentrations of both the acid and its conjugate base?

  • This Question is Closed
  1. Photon336
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Between 4-5 2-3 3-4 5-6

  2. Photon336
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    @Rushwr @Woodward

  3. Photon336
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[Ka = \frac{ [H ^{+}][A ^{-}] }{ [HA] }\]

  4. Photon336
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    pH = pKa + log [A-/HA] I guess if the concentration of acid HA equals the conjugate base A- Log[1] = 0 So the pH would be equal to the pKa and I guess this would be where the greatest buffering capacity would be. PH = pKa

  5. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yeah, definitely that's what I was thinking that looks right to me.

  6. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.