CHEM 321: Quantitative Analysis

Fall 2017, 3 credit hours Dr. C. L. Leverette Department of Chemistry and Physics SBDG 312, 803-641-3291 University of South Carolina Aiken ChadL@usca.edu Lecture: MWF 10:00 — 10:50 AM, SBDG 325 Office Hours: MF 11:00-11:50 AM and by appointment.*

*Please feel free to call or e-mail me when needed. In addition, my appointment schedule is very flexible. Therefore, if the office hours stated above do not fit into your schedule, we can set up a time that is convenient for you. Prerequisite: CHEM 112 Corequisite: CHEM 321L Required materials: Quantitative Chemical Analysis, 8th or 9th Edition, by Daniel C. Harris CHEM 321: Quantitative Analysis: “Leverette’s Lecture Notebook”, Fall 2017, Version VII Scientific calculator (capable of log, scientific notation, square root, nth root, and exponents) *Although the text for the course is Quantitative Chemical Analysis, the lectures will consist of information pulled from a variety of sources. The assigned homework problems will come from the text. My plan for us is to work straight through the book covering the material in the order Harris suggests. This should allow you to follow along with the text as I lecture. This text is an easy read so I expect students to read the chapters that we cover as we are going through the material. Success in the course is achieved by taking excellent notes, reading the text/assigned readings to reinforce what we do in class, reviewing the material each day, and practicing the problems. Course Objectives: Quantitative analysis is an introduction course into the field of analytical chemistry. The goals of this course, as stated in the Bulletin, are to provide practice of volumetric and gravimetric analysis with exposure to spectroscopic, chromatographic, and electrochemical methods. Beyond these basics, my personal goal is to provide you with the answer to the question, “What is analytical chemistry?” I hope that you will see analytical chemistry as the “measurement science”, and how analytical chemistry impacts all forms of research, from medical applications to industrial product development. Modern day applications of this “measurement science” bridge the scientific fields of biochemistry, physical chemistry, biology, physics, and materials science. David Harvey, author of Modern Analytical Chemistry stated that “the craft of analytical chemistry is not in performing a routine analysis on a routine sample, but in improving established methods and techniques, extending methods to new types of samples, and developing new methods for measuring chemical phenomena.” In essence, analytical chemists are problem solvers. In this course, we will cover more traditional wet-chemistry techniques that represent the earliest beginnings of analytical chemistry as well as modern techniques utilizing state-of-the-art instrumentation. After a short review of some key concepts learned in freshman chemistry, we will learn how to evaluate chemical data utilizing data analysis and statistics. We will also cover gravimetric analysis, equilibrium chemistry, titrimetric methods

of analysis, spectroscopy, chromatography, and electrochemistry. Quizzes testing a general understanding of these topics will be given at the end of each organized section/chapter. The overall goal of this course is to equip you with needed skills while teaching you the core concepts of analytical chemistry. I will incorporate common terminology used in the field of analytical chemistry and will reference the text when appropriate. I will provide ways that I find to be easier for solving problems that are not in the text. You are more than welcome to use the approaches utilized in the text; however, these techniques will not be extensively covered in class. Grading: Pts % of grade Quizzes (8 of 9) at 45 pts each 360 78 Final Exam 100 22 Total Points for the Course 460 100 I am not giving exams, but rather 9 quizzes during the semester. The idea is that I have divided the material into smaller sections that should allow each student to study the topic as we go and then demonstrate an understanding of the material in a shorter time frame. This will allow me to see where the class is with the information and will identify students earlier on that might be struggling. For the student, it gives you 9 quiz grades instead of 4 major exams and allows you to have one drop during the semester. By dividing the material into smaller sections, it should also make studying the material easier. In an attempt to be as fair and reasonable as possible, I will give partial credit for problems on quizzes if the effort is demonstrated. My giving of partial credit in based solely on my discretion. Write out your calculations or I cannot give you any credit. I reserve the right to stop giving partial credit at any point. No partial credit will be given for the final exam. The final exam is comprehensive and is the standardized American Chemical Society (ACS) exam. Each question answered correctly is worth 2.85 points. Therefore, 35 out of 50 questions should be answered correctly to receive a 100% on the final exam. Final letter grades will be based on the percentage of the total points earned and on the tentative scale below. The tentative grading scale is as follows: ≥ 86 A 82-85 B+ 75-81 B 71-74 C+ 61-70 C 57-60 D+ 51-56 D ≤ 50 F For all quizzes and tests, The USC Aiken Honor Code is in full effect. If the instructor has evidence that a student has violated this honor code for a particular assignment, that student will receive a 0 for that assignment and a written letter detailing and documenting the student’s actions will be sent by the instructor to the Executive Vice Chancellor for Academic Affairs (EVCAA). Further information about violations of Academic Integrity can be found in the 2017-2018 USCA Student Handbook. You will be asked to sign the Honor Pledge on each examination.

Graded quizzes will be returned to you in a timely manner. You will not be able to keep the graded quizzes. Therefore, for preparation of the final exam, you will want to review your class notes and the homework problems. Homework: Homework will be assigned regularly throughout the semester. I will not be taking up the homework. I will provide you with a key for each assignment so that you can see the correct answers as well as the correct procedure for solving the problem. Although the homework is not graded, if you do not do the homework you will not be successful in this class. Portable Electronic Devices: The use of any portable electronic devices, including cell phones, MP3 players, iPods, iPads, tablets, etc., during class is not allowed for any reason unless prior approval has been given to a student from the instructor or unless required for the course. If you are planning to have any of these devices in class, they must be turned off and stowed away for the duration of the class period. If a student is seen touching, holding, or using any portable electronic device during a test period without the prior consent of the instructor, the instructor will assume that the student is cheating and the test will be recovered and a 0 will be given to that student for the assignment. A full description of this policy can be found in the USCA Student Handbook. Attendance: Attendance of all class meetings is expected, though excused absences are understandable. However, regular attendance will be looked upon favorably at the end of the semester for people with borderline grades. An attendance sheet will be passed around each class period for you to sign. Any student who has more than 10% unexcused absences will be assessed a one letter grade penalty off the final course grade. Any student who has been absent (excused and unexcused) more than 25% of all class meetings will receive a failing grade for the class. Unexcused absences on exam days will result in a grade of 0 for the exam. Exams for people with excused absences must be made up as soon as possible at a time convenient to the student and the instructor. Excused absences require a doctor’s note, a note from a family member that includes a telephone number to check, a business note, or a receipt (in the case of car problems). Please contact me with any questions. Drop Date: A student must drop the course and lab together prior to Oct. 31, 2017 in order to receive a “W” in both courses. After this date, the student will receive a “WF” if he or she withdrawals. Disability Statement: If you have a physical, psychological, and/or learning disability that might affect your performance in this class, please contact the Office of Disability Services, B&E 134, (803) 643-6816, as soon as possible. The Office of Disability Services will determine appropriate accommodations based on documentation.

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CHEM 321/321L Fall 2017 Tentative Course/Lab Schedule

Quizzes: Quiz 1 (Ch. 0, 1) 9/8 FP, Quiz 2 (Ch. 2, 3) 9/18 HP, Quiz 3 (Ch. 4) 9/25 FP, Quiz 4 (Ch.5, 27) 10/9 FP, Quiz 5 (Ch. 6) 10/16 FP, Quiz 6 (Ch. 8 then 7) 10/27 FP, Quiz 7 (Ch. 9, 11) 11/6 FP, Quiz 8 (Ch. 10, 12) 11/20 FP, Quiz 9 (Ch. 18-21, 23-26) 12/8 FP

Date Chapter Lab Date Chapter Lab

8/25 F Ch. 0 and 1; The Analytical Process/Chemical

Measurements/Syllabus Read Ch. 2 (Tools of the

Trade) on your own.

10/23 M

Ch. 7, 8, 9-12 continued.

Tuesday, 10/24: Lab #7 The

Determination of Chloride in a Commercial Unknown by the

Mohr Method

8/28 M Tuesday, 8/29: Introduction/Assign Lab

Drawers/Clean Glassware and Lab #1: Perfecting the Art of

Pipetting and Calibrating Volumetric Glassware

10/25 W

8/30 W 10/27 F

9/1 F

Ch. 3-4; Experimental Error, Statistics, Quality Assurance

and Calibration Methods

10/30 M Tuesdays, 10/31, 11/7:

Lab #8 The Determination of Nitrate

in Water by UV-Vis Spectrophotometry

9/6 W Tuesday, 9/5: Lab #2 The Percent of Water in

Hydrated Barium Chloride 9/8 F 11/1 W

9/11 M 11/3 F 9/13 W Tuesday, 9/12:

Lab #3 Understanding a Normal Distribution and Statistical

Analysis of Weighing

11/6 M

9/15 F 11/8 W

9/18 M Ch. 5 and 27; Standard Additions and Gravimetric

Analysis

Tuesdays, 9/19, 9/26, 10/3: Lab #4 The Gravimetric

Determination of Iron in a Commercial Unknown

11/10 F 9/20 W 11/13 M

Ch. 18-21; Introduction to Spectrometric Methods

Ch. 23-26; Introduction to

Analytical Separations, GC, LC

11/14: Lab #9 Determination of Ethanol in Wine by GC

Chromatography and the Internal Standard Method

11/21 (No Lab)

9/22 F 11/15 W 9/25 M

Ch. 6, 8, parts of 7; Chemical Equilibrium, Activities, Titrimetric Methods of Analysis, Precipitation

titrations and Calculations

11/17 F

9/27 W 11/20 M

9/29 F 11/27 M 10/2 M 11/29 W 10/4 W 12/1 F

Tuesday, 11/28: Check-out

Tuesday, 12/5 (No Lab)

10/6 F 12/4 M Ch. 14-17; Intro. to Electrochemistry,

Potentiometry, Redox Titrations

10/9 M Tuesday, 10/10: Lab #5 Preparation and

Standardization of HCl and NaOH Solutions

12/6 W 10/11 W 12/8 F

10/13 F

12/15 M 11 AM; Final Exam

10/16 M

Tuesday, 10/17: Lab #6 Titrimetric Analysis of a Commerical Soda Ash Unknown

for Sodium Carbonate

10/18 W Ch. 7, 8, 9-12; Titrimetric Methods of Analysis, SA/SB,

WA/SB, etc., Buffers, Polyfunctional Acids/Bases,

EDTA