CHM 246 Quantitative Analysis Winter 2009

Lecture: MWF 12:00 – 12:50 Instructor: Dr. Rob Pfaff

S 301 Office Hours: MWF 11:00 – 11:50

(and by appointment)

Lab: W 1:00 - 3:50 Office: S 304A

S 308 Phone: 866-6380

Quantitative analysis is a predominantly practical course normally taken during the sophomore year. General chemistry, Chem 121-122, is the prerequisite.

There is one required text for the course: Skoog, West, Holler and Crouch, Fundamentals of Analytical Chemistry, 8^th Edition, Thompson Brooks/Cole, 2004.

LECTURE COVERAGE

The following material will be covered on or about the dates indicated. If warranted, this schedule may be revised as the semester progresses.

Week	Beginning Date	Material in Skoog, et al.	Suggested Questions and Problems
1	1/5	Intro, Review, Chapters 1, 5 – 7	Ch 5: 8,10,11,12,13 Ch 6: 3,5,7,13,18,21 Ch 7: 1,3,4,6,11,16,22,28,31
2	1/12	Chapter 9 Chapter 10	Ch 9: 1,4,7,8,13,16,18,20,26,27 Ch 10: 7,8,10,11
3	1/19	Chapter 11 Chapter 12	Ch 11: 4,5,6,11,13,15,17 Ch 12: 3,10,12,14,18,22,26,28
4	1/26	Chapter 13 Exam 1 Wednesday afternoon	Ch 13: 4,8,10,13,15,18,23
5	2/2	Chapter 14	Ch 14: 3,6,10,13,18,21,23,32,38,39,42
6	2/9	Chapter 15 Chapter 16	Ch 15: 4,7,10,12,16,18,27,30 Ch 16: 10,12,19,23,25,27,32,37
7	2/16	Chapter 17	Ch 17: 5,9,13,15,17,21,23,27
8	2/23	Chapter 18 Exam 2 Wednesday afternoon	Ch 18: 4,7,8,13,16,18,20,25
	3/2	Spring Break
9	3/9	Chapter 19 Chapter 20	Ch 19: 8,11,14
10	3/16	Chapter 21 Chapter 24	Ch 20: 1,5,13,19,21,28,30,34,39,43,48 Ch 21: 11,15,20,22,26
11	3/23	Chapter 25 Chapter 26	Ch 24: 3,6,10,14,19,21,22,27 Ch 25: 21
12	3/30	Chapter 26 Exam 3 Wednesday afternoon	Ch 26: 3,7,13,16,18,28,32
13	4/6	Chapter 28 No Class on Good Friday	Ch 28: 2,5,15,17
14	4/13	No Class on Easter Monday Chapter 29 Chapter 30	Ch 29: 1,3,6,8,9,12,15 Ch 30: 5,9,11,15,29,31
15	4/20	Chapter 31 Chapter 32	Ch 31: 11,19,21 Ch 32: 1,9,15

Cumulative Final Exam, Monday, April 27, at 1:00 p.m.

EXAMS AND GRADING

The grading in this course will be derived from three 100 point exams and a 200 point cumulative final exam. Your total points will be converted to a percentage of the 500 points available and letter grades will be assigned on that basis. Students are expected to take all exams at the scheduled times. If a conflict should arise which prevents taking an exam at the scheduled time, I may, at my discretion, grant a make up. Requests for make-ups MUST be made before the scheduled exam time (even a phone message may suffice). Requests made after the scheduled time will not be considered. There will be NO exceptions. You are responsible for topics covered in the text, even if they are not covered in class. You are also responsible for topics covered in class, even if they are not covered in the text.

We will generally cover new material only on Mondays and Fridays; this coverage will be rapid and center on the theoretical aspects of the material. Wednesdays will generally be reserved for problem-solving, working examples, lab prep, etc.

On all written work, proper grammar and sentence structure are expected and points will be lost for bad grammar and sentence structure. Obviously, this is not an English class but good communications skills are essential in chemistry. You will also be required to use the American spellings of chemicals.

In addition, it is my policy NOT to approve dropping the course after the College’s official drop date.

If you are a student with a disability, kindly meet with me immediately to discuss the accommodations you will need during class activities, examinations, and out of class assignments in order to participate fully and demonstrate your abilities.

The anticipated grade cut-offs are below. They may not be the final cut-offs but they will give you an idea of your status. In the past, cut-offs have always stayed the same or have been dropped slightly. Therefore, these cut-offs can be regarded as giving your minimum grade.

A	93%
A-	90%
B+	87%
B	83%
B-	80%
C+	77%
C	68%
C-	65%
D+	61%
D	50%

LABORATORY COVERAGE

Each student is required to complete the eight experiments from the textbook CD listed below.

	Week(s)	Experiment	Pages	Title
1.	2-3	37B-1	1062-64	The Gravimetric Determination of Chloride in a Soluble Sample
2.	5	37B-3	1065-66	The Gravimetric Determination of Nickel in Steel
3.	7	37C-3 – 37C-7	1067-71	Preparation and Standardization of Hydrochloric Acid and Carbonate-Free Sodium Hydroxide Solutions
4.	9	37E-2 37E-5	1078-79 1080-81	Preparation of Standard 0.01 M EDTA Solution The Determination of Hardness in Water
5.	10	37F-1 37F-2 37F-3	1081 1081-82 1082-84	Preparation of 0.02 M Potassium Permanganate Standardization of Potassium Permanganate Solutions The Determination of Calcium in a Limestone
6.	11	37I-1 37I-2 37I-3	1092 1093 1093-94	Preparation of Solutions Standardization of Sodium Thiosulfate Against Potassium Bromate The Determination of Ascorbic Acid in Vitamin C Tablets by Titration with Potassium Bromate
7.		37K-1	1098-1100	The Electrogravimetric Determination of Copper and Lead in Brass (partners)
8.		37N-3	1106-07	The Determination of Manganese in Steel (partners)

In general, you will work alone on experiments. All work must be completed during the available laboratory periods. Experiments may take 1, 2, or 3 lab periods, depending on the number of drying and cooling cycles required for the samples. You may need to be working on two experiments at the same time, due to lengthy drying and cooling cycles. Good planning is crucial in working these labs. You will need to be finished with all lab work by April 22, 2009 for Locker Check.

Laboratory reports normally consist of a one-page statistical workup of your data. The forms to be used are kept in a folder taped to my office door. The use of these forms will be discussed during the first experiment.

One experiment is to be written up in the more formal way. This report is to be written in the form of a manuscript for publication in an American Chemical Society journal. I will provide you with the format instructions at a future date. You may choose from experiments 7 or 8 for this write-up. Note that, even though the data used in this report will be the same as your partner, all the writing is to be your own.

You are required to keep a permanently bound laboratory notebook, into which you must record all data; scratch paper will be confiscated. Your notebooks have duplicate pages; you are required to turn in the copy pages when you leave lab each week. Guidelines for the laboratory notebook are found on pages 51 - 52 in your text. Lab notebooks will be scored regularly throughout the semester.

Laboratory safety rules will be enforced at all times. You will be expected to read, sign, and obey a list of safety rules. A fairly complete discussion of laboratory safety is found on pages 52 - 53 in your book. Goggles (not perforated, but with a few covered vents, that is, splash approved) are required at all times in lab.

Lastly, before you start laboratory work on an experiment, you must look up all of the substances used in the Material Safety Data Sheet books in the Chem Reading Room, except indicators. Place into your notebook relevant information about each substance, such as CAS Registry Number, procedures to follow if the substance is spilled, disposal procedures, first aid procedures, etc.

Laboratory grades will be based on the eight experiments and on the notebook. Each of the nine items will be worth 50 points. The percentage cut-offs are the same as for the lecture.

LOCKER LIST

The following items should be in your locker. Make sure that they are present, clean, and unbroken. Once you have signed below, you are responsible for the contents as listed.