CH 223 Chapter Guides

Chapter Guide One: Overview | Resources | Practice

  Overview of Chapter Guide One

The goal of this assignment is to learn about chemical equilibrium. Most reactions do not proceed completely from reactants to products, and equilibrium helps scientists to understand the extent of a given reaction.

Chapter 13 introduces us to chemical equilibrium. We will learn about the distribution of products to reactants over time, and we will use the equilibrium constant, K, to determine if a reaction is more product favored or reactant favored. For systems not at equilibrium, we shall use the reaction quotient, Q, to determine the course of a given reaction. We will learn about the connection between the equilibrium constant and the kinetics rate constant, k. We shall also explore the concept of Le Chatelier's Principle to determine the probable effect upon a reaction when adding or removing chemicals or changing conditions.

For a complete list of important concepts, see the Chapter 13 Study Guide

  Resources for Chapter Guide One

To understand molecular bonding, you should read Chapter 13 in your textbook.

The following screencasts might prove useful to you as you study this chapter.

The Chapter Thirteen lecture notes which accompany this lesson will be helpful to you when going through this section. These are Web versions of the lecture notes I use in my "normal" CH 223 class and should let you see what is important to me in this chapter. You can also view the Lecture Notes in presentation software: Keynote, PowerPoint

A variety of handouts are available from Chapter Thirteen. Feel free to explore all of them or just the ones which give you difficulty.

Once you have mastered the concepts listed above, check out the Chapter Thirteen Concept Guide for a series of worked problems relating to this chapter. They will help you to ensure the mastery of the knowledge from this chapter.

Finally, test yourself (and get extra-credit in the bargain!) on the following introductory chemistry concepts. If you get 9 out of 10 correct (or some multiple thereof), submit the information to me to receive extra credit.

  1. Calculating the Value of an Equilibrium Constant, K
  2. Calculating K Part II
  3. Calculating an Equilibrium Concentration
  4. Q vs K
  5. The Le Chatelier Effect
  6. Kp and Kc

  Practice the Concepts of Chapter Guide One

Please complete problem set #1 to further explore the idea of chemical equilibrium. Problem set #1 covers several questions from Chapter 13, and it can be found here. We will discuss problems like these during recitation, so come prepared to ask and answer questions.

For additional practice, try completing practice problem set #1 (with answers included at the end) and/orthe non-assigned problems in Chapter 13. Answers to many of those problems are listed in the back of your textbook.

If you need assistance on these problems, you have several options. You can visit the AVID / Learning Success Center located above the MHCC library on the Mt. Hood Community College campus; they have tutors available to help you with your chemistry homework. You can also contact me if you have any questions.

Test your mastery of the subject matter by trying the self quiz for Chapter 13. This is an ungraded test that you can use to gauge your comfort level with these concepts. This sample Quiz #1 (answers) (which was given during a previous year's CH 223 class) will help you understand the kind of questions that will be asked on the quiz.

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Questions? Contact me!