Chemistry

posted by .

A student needs 1.0L of buffer solution with a PH =10.0 .She selects the HCO3^-
>CO3^2- buffer system. The K(HCO3^-) =5.6x10^-11 .
what is the [HCO3^-]/[CO3^2-]ratio for the buffer?

  • Chemistry -

    pH = pKa + log[(CO3^-2)/(HCO3^-)]
    I would solve for base/acid, then take the reciprocal.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    Use the Bronsted-Lowry definitions to identify the two conjugate acid-base pairs in the following acid-base reaction: HCO3^- + S^2- <-> HS^- + CO3^2- I got it. HCO3^- is the base in the pair with CO3^2-. S^2- is the acid in the …
  2. Chemistry

    Write out the Ka and Kb for the biocarbonate ion with chemical equation: Would this be correct: HCO3^-(aq) <--> H+(aq) + CO3^-2(aq) Ka = [H+][CO3-2]/[HCO3- H2O + CO3-2(aq) <--> HCO3-(aq) + OH-(aq) Kb = [HCO3-][OH-]/[CO3-2] …
  3. Chemistry

    4) Which of the following is the most effective buffer system for a pH value of 4.45?
  4. Chem 2

    A popular buffer solution consist of carbonate (CO3 2-) and hydrogen carbonate (HCO3-) conjugate acid-base pair. Which, if any of the following such buffers has the highest buffer capacity?
  5. Chemistry

    Complete the charge balance equation for an aqueous solution of H2CO3 that ionizes to HCO3^- and CO3^2- ______ = ______ + _______ + _______ Given choices: [HCO3^-],[CO3^2-], [OH^-], 2[H^+], [H2CO3], 2[CO3^2-], 3[H^+], {H^+] I don't …
  6. Chemistry

    Consider the reaction CO3^-2+H2O<==>HCO3^+OH^-. Kb for CO3^-2 is 2.1x10^-4 at 25 Celsius . What is Ka for the HCO3^- ion at 25 Celsius?
  7. College Chemistry II

    What is the solubility of ZnCO3 at 25C in a buffer solution with a pH of 10.21?
  8. Chemistry

    A chemist needs to prepare a buffer using the carbonate system (information in the table below) with a final pH of 6. Which components should they mix in water to product this buffer?
  9. Chemistry

    A chemist needs to prepare a buffer using the carbonate system (information in the table in the previous quetion) with a final pH of 10. Which components should they mix in water to product this buffer?
  10. chemistry

    To create a 0.1 M carbonate buffer pH = 10.2. You choose to use a combination of HCO3- / CO32-. This buffer system has pKa = 9.9.   a) Calculate how much you need to weigh in each of the sodium salts, NaHCO3 and Na2CO3, to create …

More Similar Questions