Weak Acid Dissociation - Ka

Weak Acid Dissociation - Ka

Author: carolyn fruin

Learning Targets:

  • I can explain how an acid can be weak in terms of "dissociation equilibrium".
  • I can write the the acid dissociation constant, Ka, for a weak acid.
  • I can use an ICE table to solve for [H+] or Ka for an aqueous solution of a weak acid.
  • I can calculate the pH of a weak acid using an ICE table.
See More
Try a College Course Free

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to over 2,000 colleges and universities.*

Begin Free Trial
No credit card required

28 Sophia partners guarantee credit transfer.

264 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 22 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.


Textbook Notes: Calculating the Ka and [H+] of Weak Acids

These notes can be used while reading Chapter 18-3, pages 567-576. Try the sample problems given and be sure to ask questions in class if you get stuck anywhere or would like clarification on anything.

Full Screen

Power Point - Acid/Base Equilibria

This power point describes Acid/Base Equilibria and demonstrates how to solve for the pH of a weak acid or weak base.

Percent Ionization Notes

A sample problem worked out in steps describing how to determine the percent ionization of an acidic solution.

Full Screen

Determining the pH of a Weak Acid from the Ka

This video demonstrates how to determine the [H+] of a weak acid in order to determine the pH using the acid dissociation constant as a starting point.

Source: chemistNATE youtube channel http://www.youtube.com/watch?v=R2sqOiVwQdI

Finding the Ka Given pH usng an ICE Table

Given a pH, this example demonstrates how to calculate the Ka of a weak acid.
Yes, he's a little over enthusiastic, but clear.

Source: chemistNATE youtube channel http://www.youtube.com/watch?v=OA-f_8F5iNU

Worksheet 8.2 - Ka Problems Answer Key

Full Screen