1 / 1

Suppose 5 moles of a weak acid (HA) were mixed with 2 moles of a

Suppose 5 moles of a weak acid (HA) were mixed with 2 moles of a strong base (OH - ) in a 1.0 L flask. Given the Ka = 1.0 x 10 -6 , determine the pH. CHEMISTRY: 1 st HA + OH - → H 2 O + A - + xs HA. Initial 5 2 0 ?.

erich-woodard
Download Presentation

Suppose 5 moles of a weak acid (HA) were mixed with 2 moles of a

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. Suppose 5 moles of a weak acid (HA) were mixed with 2 moles of a strong base (OH-) in a 1.0 L flask. Given the Ka = 1.0 x 10-6, determine the pH. CHEMISTRY: 1st HA + OH-→ H2O + A- + xsHA Initial 5 2 0 ? Change -2 -2 +2 After RXN 3 0 2 3 xsHA Now for Equilibrium: xsHA + H2O  H3O+ + A- I.3 0 2 C. -x +x +x E. 3-x x 2+x try dropping both the +x and the –x terrms x = 1.5 x10-6 = [H3O+] pH = -log [H3O+] = 5.82

More Related