Lesson 15.1 Topics in Applications of Aqueous Equilibria
Suggested Reading

Zumdahl Chapter 15
Essential Question

What are some applications of aqueous equilibria?
Learning Objectives:.










Describe the common ion effect.
Apply Le Chaterlier's principle to chemical systems involving common
ions.
Define buffer.
Identify components of buffers.
Calculate the pH of buffer solutions.
Determine the effect of the addition of acids and bases on the pH of
buffer solutions.
Compare and contrast pH curves for different types of acid base
titrations.
Solve problems relating to titrations and pH curves.
Solve problems involving solubility equilibria and the solubility product.
Solve solubility problems relating to the common ion effect.
Introduction
In this lesson we will highlight some of the concepts from Chapter 15. This
content should not appear on the IB exam, but will definitely show up on the
AP exam. Therefore, those taking the AP exam should study this content in
greater depth using the study guide. We'll take each topic one at a time.
Common Ion Effect
READ this article about the common ion effect:
http://faculty.ncc.edu/LinkClick.aspx?fileticket=KFQ8mVJpEPY%3D&tabid=1904
The first 2:26 minutes of this video is worth watching. I suggest stopping when
he switches to the graph.
Watch this YouTube Video:
https://www.youtube.com/watch?v=NFxy813w_c0
Buffers
READ this article about buffers:
http://www.chem.purdue.edu/gchelp/howtosolveit/Equilibrium/Buffers.htm#BufferpH
Watch this YouTube Video:
https://www.youtube.com/watch?v=l9dliAngF2k
Titrations and pH Curves
READ this article about pH curves:
http://www.chemguide.co.uk/physical/acidbaseeqia/phcurves.html
You should practice sketching these curves as you work through the
webpage. It is important for you to be able to describe the type of titration
occurring from the shape of the curve, and to identify (label) the main features
on each curve.
Solubility Product Constant
READ the article about the solubility product constant:
http://www.chem.purdue.edu/gchelp/howtosolveit/Equilibrium/Solubility_Products.htm
HOMEWORK: Practice exercises 17.1 – 17.4, 17.6 – 17.13, 17.15 – 17.16