Problem sets
CH102 General Chemistry
Spring 2007

Exceptional Books

The assignments below are from ACS Chemistry, Notes on General Chemistry/2e, and, occasionally, from additional notes. Any problems contained in the assigned material are part of the assignment and should be done.

Click on a date below to go to the assignment for that date.

• Week of April 30
• Week of April 23
• Week of April 16
• Week of April 9
• Week of April 2
• Week of March 26
• Week of March 19
• Week of March 5
• Week of February 26
• Week of Febraury 19
• Week of Febraury 12
• Week of February 5
• Week of Jnauary 29
• Week of January 22
• Week of January 16

Each Monday-Wednesday-Friday class meeting will cover approximately two sections of the text; each Tuesday-Thursday class meeting will cover approximately three sections of the text. You should study carefully the textbook sections and do the problems pertaining to those sections, found at the end of the chapter, before the lecture meeting on those sections. Read the last sentence again. If you do as it says, you will greatly enhance what you learn in lectures and so deepen your progress.

The answers to the numerical problems are given in Appendix A in the textbook.  You can also "grade" your own and those of your friends in the class from the information in the textbook.  You can also raise questions about any uncertainties in e-mail messages, in discussion sections, in lecture, and at office hours.

Most weeks there will be a brief quiz in discussion on the readings and problems.

January 16

Read carefully and actively the first six sections of chapter 6 of the text and do all related problems and Web Companion exercises. Suggested solutions to Chapter 6 problems are here: 380 KB / 39 pages.

Related material is Notes on General Chemistry, 2e, pages 321–326. An update to pages 321-322 is here: 40 KB / 2 pages. A misprint is corrected on updated pages 325-326 here: 43 KB / 2 pages.

Answers to some student questions about acid base strength are here: 15 KB / 2 pages.

January 22

Read carefully and actively up through section 10 chapter 6 of the text and do all related problems and Web Companion exercises.

On page 380 the text states that points of understanding relative strengths of acids and bases is to enable us "to tell, without doing any mathematics or making any measurements, what chemical species will predominate in aqueous solutions of acids and bases." Worked Example 6.30 there illustrates this approach. Additional examples are on pages 211-222 of Notes on General Chemistry, 2e.

January 29

Read carefully and actively up through the end of chapter 6 of the text and do all related problems and Web Companion exercises.

This week we begin chapter 7 of the text and all of chapter 10 of Notes on General Chemistry, 2e. Suggested solutions to Chapter 7 problems of the text are here: 448 KB / 36 pages.

For this week, work through the first two sections of chapter 7 of the text, corresponding material in the Notes, do all related problems and Web Companion exercises.

February 5

For this week, work through the first eght sections of chapter 7 of the text , corresponding material in the Notes, do all related problems and Web Companion exercises.

February 12

For this week, work up through the end chapter 7 of the text, corresponding material in the Notes, do all related problems and Web Companion exercises.

We have created a diagram illustrating the relationship between energy change and enthalpy change. It is at

<http://quantum.bu.edu/notes/GeneralChemistry/dEVersusdH.pdf>

Related assigned material in Notes on General Chemistry, 2e is

• pages 141--149, Chapter 5, Properties of Gases.
• pages 255--267, Chapter 10, Energy balance: First law of thermodynamics

February 19

For this week, work through the first six sections of chapter 8 of the text and corresponding material in the Notes (see below), do all related problems and Web Companion exercises.

Related assigned material in Notes on General Chemistry, 2e is Chapter 10, Energy balance: First law of thermodynamics and Chapter 11.2, Counting distingushable arrangements.

Suggested solutions to Chapter 8 problems of the text are here: 662 KB / 49 pages.

February 26

For this week, work through the end of chapter 8 of the text, corresponding material in the Notes, do all related problems and Web Companion exercises.

March 5

This week we complete chapter 8 of the text.

Examples showing how spontaneous changes we are familiar with trace to an increase in the number of arrangements of particles. The examples include seeing where the formula for osmotic pressure comes from. Working through these examples, together with the question in Chapter 11.2 of Notes on General Chemistry/2e, will be good preparation for the next exam, on Monday, March 19.

The examples are here. We hope these examples will help in your work on predicting spontaneous change.

March 19

This week we begin chapter 9 of the text. Suggested solutions to Chapter 9 problems of the text are here: 465 KB / 57 pages.

Related assigned material in Notes on General Chemistry, 2e is

• Chapter 7, Chemical equilibrium. See especially pages 194--197 on using approximations.
• Chapter 8, Acid-base equilibria. We will use the four regimes described there to analyze acid-base equilibria. The approximation methods described streamline calculations
• Chapter 9, Precipitation equilibria.
• Chapter 11.1, Spontaneity: Pages 304--307 develop the connection between free energy change and equilibrium, and pages 307--311 give the basis of Le Chatelier's principle.

For this week, work through the first six sections of chapter 9 of the text, corresponding material in the Notes, do all related problems and Web Companion exercises.

March 26

This week we complete chapter 9 of the text, and the related assigned material in Notes on General Chemistry, 2e (see previous week's assignment).

April 2

This week we begin chapter 10 of the text. Suggested solutions to Chapter 10 problems of the text are here: 431 KB / 47 pages.

Related assigned material in Notes on General Chemistry, 2e is Chapter 12, Electrochemistry: Harnessed spontaneity.

For this week, work through the first six sections of chapter 10 of the text, corresponding material in the Notes, do all related problems and Web Companion exercises.

April 9

This week we complete chapter 10 of the text, and the related assigned material in Notes on General Chemistry, 2e (see previous week's assignment).

April 16

For this week, work through the first six sections of chapter 11 of the text and corresponding material in the Notes (see below), do all related problems and Web Companion exercises.

Related assigned material in Notes on General Chemistry, 2e is Chapter 13, Kinetics: Approach to equlibrium.

Suggested solutions to Chapter 11 problems of the text are here: 1,466 KB / 55 pages.

April 23

For this week, work through the first eight sections of chapter 11 of the text and corresponding material in the Notes (see below), do all related problems and Web Companion exercises.

April 30

Complete chapter 11 of the text and corresponding material in the Notes (see below), do all related problems and Web Companion exercises.

Updated pages 377--378 of the Notes, on the dependence of rate constants, equilibirum constants on T, are here: 41 KB / 2 pages.

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http://quantum.bu.edu/courses/ch102/problemSets.html
Updated Monday, April 30, 2007 4:29 PM
Dan Dill (dan@bu.edu)