Post a New Question

AP Chemistry

posted by .

What is the pH of a .20M HA solution (Ka=1.0x10^-6) that contains a 0.40M NaA?

  • AP Chemistry -

    I found that it came to 6.30 for the pH. So I first balanced the equation set up an "ICE" box and then solved for x using the Ka equation...Ka=([H+][A-])/([HA]), I neglected the +x and -X and plugged in to solve. Then I got the pH by doing the negative log of the x. Hope this helped :)

  • AP Chemistry -

    I agree with 6.30 but I used the Henderson-Hasselbalch equation. It's easier and you don't need an ICE chart.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. COLLEGE PHYSICS

    a uniform bridge span weighs 50x10^3 and is 40m long. A car weighing 15X10^3 is parked with its center of gravity located 12m from the right pier. what upward support force does the left pier provide?
  2. chemistry

    We want to make 100. mL of 1.0 M NaA solution by dissolving solid NaA in water. What mass of solid NaA is needed?
  3. chemistry

    Mix together 5.0 mL of solution #1 – 1.0 M HA with 35 mL of solution #2 – 1.0 M NaA in a small Erlenmeyer flask. What are the concentrations of HA and A– in solution #7?
  4. science

    by how much does the momentum of a body of mass 54kg change when its speed 1.decreases from 20m/s to 0.20m/s ;and 2.increases from 30m/s to 40m/s
  5. Chemistry

    To what volume should you dilute 43.5mL of a 4.20M KI solution so that 24.0mL of the diluted solution contains 2.80g of KI?
  6. chemistry

    To what final volume should you dilute 60.0 of a 5.20M KI solution so that 40.0 of the diluted solution contains 3.15 of KI ?
  7. Chem

    in a 0.40 M solution of diprotic acid H2A(Ka=7.4x10^-5, Ka2=5.0x10^-10 at 25 celsius), what is the equilibrium concentration of A^2-?
  8. chemistry

    Which weak acid would be best to use when preparing a buffer solution with a pH of 8.50?
  9. 8th Grade math PLEASE CHECK MY ANSWERES

    1.Write the number in standard form: 7.1x10^4 A)710 B)7,100 C)71,000 D)710,000*** 2.Write the number in standard form: 5.01x10^-3 A)5,010 B)0.501 C)0.0501 D)0.00501*** 3.Multiply (2.0x10^4)(3.0x10^3)=?
  10. Chemistry

    My question talks about a buffer with HA and NaA, where NaA is the sodium salt of the acid. What does the equation for this look like?

More Similar Questions

Post a New Question