Chemistry 13. General Chemistry II: Reactivity, Energetics, and Equilibrium

INSTRUCTOR: Prof. Keith T. Kuwata, Olin-Rice 318, 696-6768, kuwata@macalester.edu.

DESCRIPTION: This is the second of two courses in general chemistry. The first two-thirds of this semester will be focused on the macroscopic, quantitative aspects of chemistry. We examine in greater depth the physical properties of solutions, chemical thermodynamics, and solution-phase reactions; in each case we will build on what we have already learned in Chemistry 11. We also introduce mathematical treatments of chemical equilibria in the gas and solution phases (including electrochemistry), as well as rates of reaction (chemical kinetics). In the last third of the class, we apply the fundamental concepts of structure (which we covered thoroughly in Chemistry 11), equilibria, and kinetics to discuss the chemistry of selected non-metals, transition metals, biological systems, and the nucleus. This integration of material should be a good preparation for the final examination, which will cover material from both semesters of general chemistry. (This is discussed further below.)

Doing experiments is a critical part of learning chemistry (and hopefully fun as well!), and you are required to be registered in one of the four weekly sections (all of which meet in Olin-Rice 347). Lab attendance every week is mandatory. You must also read the background for each experiment and complete its Advanced Study Assignment before lab. If special circumstances preclude your attendance at a session, you must notify your instructor beforehand and make arrangements to make that session up.

LECTURES: MWF from 1:10 p.m. to 2:10 p.m. in Olin-Rice 350. Attendance is not mandatory, but highly encouraged. (It may even prove entertaining from time to time.) It is your responsibility to read each chapter before lectures on the material begin. See p. 3 of this syllabus for the approximate lecture schedule. While I will often approach a subject differently from your text, doing the reading will nevertheless help you understand the lectures a lot more, and equip you to ask questions during class.

REQUIRED TEXTS: Same as for Chemistry 11: (Lecture) Jean B. Umland and Jon M. Bellama, General Chemistry, 3rd ed., Brooks/Cole, 1999. (Lab) Emil J. Slowinski, Wayne C. Wolsey, and William L. Masterton, Chemical Principles in the Laboratory, 7th ed., Harcourt, 2001.

OTHER REQUIRED MATERIALS: Macalester College and the State of Minnesota both require that you wear safety goggles during all laboratory sessions. You may purchase a pair at the Ruminator. You should also own your own scientific calculator for use in lab and during exams.

PROBLEM SETS: You will be required to turn in solutions to the problems at the end of each chapter (of Umland/Bellama) assigned on the course schedule (p. 3) on the indicated due date. No late homework will be accepted unless you are sick, and must, in any case, be turned in before the exam on that chapter. However, the problem set immediately before each test will not be collected. Each graded problem set will be weighted equally in computing your final cumulative percentage (see below).

For mathematical problems, you must show the process by which you obtained your answer. This final numerical answer must contain the correct number of significant figures and have the appropriate physical units attached. This is required to receive full credit on both homework and exam problems.

Doing the assigned homework is essential for you to learn the material and do well on exams. However, do not expect the specific problems I assign to be a “targeted rehearsal for, or preview of, a test.”¹ The goal is for you to master concepts and principles on which you will be tested. Please come talk with me if you have any questions on the homework. You are also encouraged to work with other people, but what you turn in must be your own work. I also highly recommend you make time to do additional problems as you study for this course.

EXAMINATIONS: There will be four fifty-five minute tests during the normal lecture time slot, as well as a two-hour final examination on Thursday, May 10, 1:30-3:30 p.m. (make your travel plans accordingly!). A legitimate reason (e.g., verified serious illness) for missing a midterm must be discussed with the instructor prior to the exam. All exams will be closed-everything--any information you are not required to have memorized will be provided in your exam booklet.

Tests will largely consist of questions requiring short (i.e. one-word) answers or longer responses (calculations or a few sentences of explanation). There will be some multiple-choice questions as well. (The “Stop and Test Yourself” problems should provide good practice for this type of question.) Multiple-choice questions not only allow you to demonstrate your understanding of a broader range of topics, but will also help prepare you for the final examination, which will be entirely multiple-choice. This standardized test, provided by the American Chemical Society (ACS), will cover material in both Chemistry 11 and Chemistry 13. Such comprehensive knowledge of introductory chemistry is necessary for success in Chemistry 37 and 38 (Organic), not to mention the Graduate Record Examination (GRE) and the Medical College Admission Test (MCAT). The final exam should also be a source of encouragement (!), since Macalester students typically do quite well on this exam compared to fellow college students throughout the nation. To help you prepare, I will seek to integrate Chemistry 11 topics throughout this semester, and we will spend the last two class periods discussing an old ACS final.

GETTING HELP: I will be available in my office MWF 10:50-11:50 a.m., T 4:40-5:40 p.m., and Th 9:40-10:40 a.m. If you can’t make one of these office hours, please make an appointment with me. Other helpful people include Mrs. Darlane Kroening (x6224) and her student tutors at the Macalester Learning Center in the Lampert Building (close to the NE corner of Grand and Snelling), or Prof. Wolsey (OR 319, x6352), the other Chemistry 13 lecturer. We are all eager to help you do well in Chemistry 13!

GRADING:

Homework: 10%

Four Tests: 40%

Lab Work: 30%

ACS Final: 20%

Grades will be assigned using a curve based on your cumulative percentage of points. However, everyone who earns at least 90% is guaranteed an A or an A-. Typically, if your cumulative score is close to the class average, you will receive a B—but this is not guaranteed. Note that midterm grades will be assigned based on the first two hour exams only—homework and lab scores will not be included.

ACADEMIC INTEGRITY: Obtaining copies of exams prior to their administration, using another person to take exams for you, using unauthorized materials during exams, sharing or stealing information during an exam, and alteration of a graded exam and then requesting a regrade all constitute cheating and are forbidden. As per the Macalester Student Handbook, I will report any clear violation of academic integrity standards to Ellen Guyer, the Dean of Academic Programs.

¹ Credit for this tough, unsentimental attitude goes to my brilliant (if hard-nosed) colleague, Prof. R. G. Brisbois. All I can say is, good luck next year in Organic Chemistry!

COURSE SCHEDULE (timing of lecture topics may vary)

Date	Day	Chap	Topics/Event	Lab Experiment
1/29	M	13	More on Solutions: Colligative Properties and Solubility	Check-in + 19
1/31	W	13	(Skim Chapters 4 and 5)	(Tf Depression)
2/2	F	13	Ch 13 Hwk:36,43,54,58,82,84,94,104,120 ; due 2/5
2/5	M	14	Gas-Phase Chemical Equilibrium (Review Chapter 5!)	22 (Le Chatelier’s
2/7	W	14	Ch 14 Hwk: 63,65,69,81,85,93,97,107,113,115; not turned in	Principle)
2/9	F	14
2/12	M	18	Chemical Kinetics: Rates of Reaction (start)	23 (Equilibrium
2/14	W		Test 1: Chapters 13 and 14	Constant)
2/16	F	18	Kinetics (cont.) [Add/Drop w/o Notation Deadline]
2/19	M	18	Ch 18 Hwk: 33,34,41,47,49,55,58,67,79,128; due 2/21	21 (Clock
2/21	W	15	Acid/Base Reactions (Skim Chapter 4) and Equilibria	Reaction)
2/23	F	15	Ch 15 Hwk:39,48,73,89,94,102,128,140,170; due 2/28
2/26	M	15		25 (Buffers and
2/28	W	16	More Solution-Phase Chemistry (Skim Chapter 4 again!)	pH)
3/2	F	16	Ch 16 Hwk:48,67,75,82,88,100,112,118,130; not collected
3/5	M	16		33 (Preparation of)
3/7	W		Test 2: Chapters 18, 15, 16	CuCl)
3/9	F	17	More on Thermochemistry: Entropy and Free Energy
3/12	M	17	(Review Chapter 6!)	31 (Electrolysis)
3/14	W	17	Ch 17 Hwk:19,28,42,56,68,70,74,84; due 3/16
3/16	F	19	Electrochemistry (Review Chapter 11!)
			3/17 – 3/25 Spring Break No Classes!
3/26	M	19	Ch 19 Hwk:19,23,25,37,44,68,78,100,116; due 3/30	32 (Voltaic Cells)
3/28	W	19
3/30	F	21	Chemistry of Non-Metals
4/2	M	21	Ch 21 Hwk: to be announced; not collected	29—Part 1
4/4	W	21		(Synthesis of
4/6	F		Test 3: Chapters 17, 19, 21 [Withdraw Deadline]	Complex)
4/9	M	24	Transition Metals and Complexes	29—Part 2
4/11	W	24	Ch 24 Hwk: to be announced ; due 4/18	(Analysis)
4/13	F		Good Friday (Same Date for West and East this Year!)	No Classes
4/16	M	24		To Be Announced
4/18	W	23	Biochemistry (Review Chapter 22, Sections 1-7!)
4/20	F	23	Ch 23 Hwk: to be announced; due 4/25
4/23	M	23		36 (Qualitative
4/25	W	20	Nuclear Chemistry	Analysis I)
4/27	F	20	Ch 20 Hwk: to be announced; not collected	+ Head Start on 40
4/30	M	20		40 (Ten Test Tube
5/2	W		Test 4: Chapters 24, 23, 20	Mystery)
5/4	F		Final Review	+ Check-out
5/7	M		More Final Review + Student Evaluations

Final Examination (Very Cumulative!): Thursday, May 10, 1:30 – 3:30 p.m.

Go home!