1 / 3

AQUEOUS EQUILIBRIA PROBLEM SET

AQUEOUS EQUILIBRIA PROBLEM SET. 1. Calculate the [H + ] in a solution formed by mixing 50.0 ml of 0.10 M HCN (K a = 4.95 x 10 -10 ) with 50.0 mL of 0.50 M NaCN.  2. To make a buffer of pH = 4.25 from acetic acid

galya
Download Presentation

AQUEOUS EQUILIBRIA PROBLEM SET

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. AQUEOUS EQUILIBRIA PROBLEM SET

  2. 1. Calculate the [H+] in a solution formed by mixing 50.0 ml of 0.10 M HCN (Ka = 4.95 x 10-10) with 50.0 mL of 0.50 M NaCN.  2. To make a buffer of pH = 4.25 from acetic acid (Ka = 1.80 x 10-5) and sodium acetate, what is the ratio of NaC2H3O2 to HC2H3O2 needed?  3. A solution contains 1.0 M NH4Cl and 1.0 M NH3. Kb = 1.8 x 10-5 a. Calculate the pH. b. Calculate the pH after 0.10 mole HCl gas is bubbled into 1.0 L of the original solution.

  3. 4. A solution is made by combining 500.0 mL of 2.00 M C5H5N (pyridine) and 500.0 mL of 0.200 M C5H5NHCl (pyridinium chloride). (Kb = 1.7 x 10-9 for pyridine) a. Calculate the [OH-] in this solution. b. Calculate the [OH-] in the solution after 0.0080 mole of KOH is added.  5. Consider a solution of the weak base aniline C6H5NH2 (Kb = 4.0 x 10-10). What is the pH of a solution prepared by adding 50.0 mL of 0.10 M aniline to 50.0 mL of 0.10 M HCl?

More Related