Chem 253 – Introduction to Quantitative Analysis – Fall Semester 2004 Instructor: Website: Office: Textbooks: Calculator: Dr. Frank Cheng; ifcheng@uidaho.edu; 885-6387 Follow the link provided by: oxygen.chem.uidaho.edu/ifcheng/default.htm Renfrew Hall (REN) Room 026A Quantitative Chemical Analysis, 6 th Edition, by Daniel C. Harris Chem 253 Lab Experiments 2004 Posted at Web Site An inexpensive calculator is required. You will need the calculator during labs and exams. It should have the capability for logarithms, exponentiation (antilogarithms), yx and scientific notation operations. TEXT ENTRY CALCULATORS WILL NOT BE PERMITTED TO BE USED DURING EXAMS. A key or combination padlock with up to 3/8 inch diameter shank Please bring the safety goggles that were given to you upon completion of your general chemistry classes. If you have lost these goggles, you should purchase another pair from ChemStores (Basement, Renfrew Hall. Only departmentally approved safety goggles will be permitted to be worn in the laboratory. It is Chemistry Department policy that safety goggles MUST be worn at all times in the laboratory when anyone is working at an experiment or handling chemicals. In light of the fact that strong acids are frequently used in this course, neither sandals nor shorts may be worn in the laboratory.
Office Hours: T & R 2:00-4:00 PM or by appointment
Padlock: Goggles:
Sandals:
“Where I work, I was recently asked to put together a short quiz for applicants. The reason was that we hired one man who I literally had to draw a picture for to explain how to go from µg/g to µg/100g - and he had a B.S. in chemistry. The quiz had some conversions, with factors given, some significant figure questions, and "what is a quantitative transfer?". The first two applicants, both of whom had B.S.'s in science, bombed; the third did pretty well and we took him on. It's scary that you have to do that. Posted by Laura at May 19, 2004 10:32 AM” Introduction: This course serves two primary purposes. The first is to reinforce much of what you already know about aqueous equilibria and to apply it to the determination of selected components in several types of samples. (Note that all students who are required to take Chem 253 must have a solid understanding of aqueous equilibria for their majors.) The second is to introduce you to ways of obtaining really accurate determinations of materials by three different approaches: volumetric analysis, gravimetric analysis and spectrophotometry. The theory behind each experiment will be covered in some detail in class.
1
Classes and Homework: I will spend most of each class period introducing you to a given topic. I will then assign a few homework problems on that topic at the course website. It is strongly suggested that you complete these homework problems before the next lecture. This is important since the questions asked of you on the exams will not only test recall of knowledge but your reasoning abilities. Those abilities can only be developed by you with the assigned homework problems. Listening to lectures alone will NOT develop problem solving/reasoning abilities. Working at a steady pace is important since the material takes awhile to assimilate into most minds. Attempting to “cram” this material a few days before the exam will almost always lead to disappointing results. You are also expected to augment the lecture material with readings from the textbook. The material covered in the text is listed in the table below. Your Teaching Assistant: Each section has a different TA. If you have any questions on any material that you would prefer to ask your TA, please see him/her during their office hours in REN 049: If you can’t make it to your TA’s office hours, try to see one of the other Chem 253 TAs. Grading Policy: There will be three mid-term examinations and a comprehensive final. Your final grade will calculated in the following way: Mid-Terms 50% (16.7% each) Exam 1 – September 15th Exam 2 – October 13th Exam 3 – November 17th Friday December 17th
Final Lab
25% 25%
The grades will be assigned as follows: A: 100-80% B: 79-65% C: 64-55% D: 54-45% F: less than 45%
Mid-Term Make-up policy. In the case of an acceptable University of Idaho excused absence*, the weight of the other mid-terms and final exam will increase. The schedule follows: One excused mid-term: Remaining two mid-terms each Final Exam Remaining midterm Final Exam 22.5% 30% 30% 45%
Two excused mid-terms:
*An excused absence is defined by University of Idaho policy as a) an approved field trip or other official UI activity; b) confinement under doctor's orders; c) call to military duty; or d) leave of absence granted by student's academic dean. IMPORTANT NOTICE: The final is a standardized American Chemical Society Quantitative Chemical Analysis examination. The grades for the course will be renormalized to reflect national averages of that exam. It is scheduled at 10:00 a.m. on Friday, December 17. Everyone
2
in the class is expected to take the exam at this time. No accommodation will be made for students who have made arrangements to leave Moscow by this time. Reasonable Accommodations Reasonable accommodations are available for students who have a documented disability. Please notify the instructor during the first week of class of any accommodation(s) needed for the course. Late notification may mean that requested accommodations might not be available. All accommodations must be approved through Disability Support Services located in the Idaho Commons Building, Rm. 333.
3