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UMD CHEM 271 - Syllabus

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CHEMISTRY 271 (CHEM 271), SECTIONS 22XX (2 CREDITS): GENERAL CHEMISTRY AND ENERGETICS SPRING, 2010: MW 12:00-12:50 P.M., CHEMISTRY 1407 Assoc. Prof. Jason D. Kahn, Dept. of Chemistry and Biochemistry, Univ. Maryland, College Park Office: Chemistry 2500A (Biochemistry, Wing 5 of the Chemistry complex, Bldg. 091) Office hours: Mon. 1-2 p.m., Weds. 3-4 p.m., Chemistry 2500A Contacting me: [email protected] much preferred to 301-405-0058. There are >200 of you: please include “CHEM271” in your subject line, and please quote any previous correspondence in your emails. Please do not drop in to my office or lab. I will set up appointments outside of office hours if necessary. Web and email: The course web site is available through the ELMS system (http://elms.umd.edu). E-mail reflectors provided through Coursemail and/or ELMS will be used. It is your responsibility to make sure your e-mail address works. The SmartWork web-based homework site is http://wwnorton.com/smartwork or http://smartwork.wwnorton.com/production/norton/smartwork/ Discussion TA: Sarah Sucayan ([email protected]), 405-1815 (see above for contact directions) Office Hours: Tues. 3-4 p.m., Thurs. 3-4 p.m., Chemistry 2507 Discussion Sections: (see http://www.umd.edu/CampusMaps/) 2224(14033) Tu.....11:00am-11:50am (CHM 0127) [CHM = Chemistry] 2225(14034) Tu.....12:30pm- 1:20pm (HJP 1229) [HJP = HJ Patterson] 2227(14035) Tu..... 2:00pm- 2:50pm (CHM 0127) 2244(14036) Th.....11:00am-11:50am (CHM 0127) 2245(14037) Th.....12:30pm- 1:20pm (EGR 0135) [EGR = Martin Hall] 2247(14038) Th..... 2:00pm- 2:50pm (CHM 0127) Course Description Chemistry 271 is the fourth semester of our integrated introduction to general and organic chemistry. This course covers aspects of chemical thermodynamics and kinetics. Thermodynamics is the study of what is possible and the extent to which it is possible. Kinetics is the study of how rapidly the possible chemical transformations actually occur. The material covered here will help place your qualitative understanding of chemical reactivity from organic chemistry on a more quantitative basis. It is required for a fundamental understanding of biochemistry. Physical chemistry explores more of the underlying theories for the concepts developed here. The following areas will be emphasized:  Chemical Equilibria: Keq, especially acid-base reactions; pKa, titrations, buffers. Ideal gas law.  Thermodynamics: Enthalpy, entropy and free energy, 1st, 2nd, and 3rd laws of thermodynamics.  Relationships among thermodynamics and chemical equilibria: where does Keq come from?  Electrochemistry and oxidation-reduction reactions, and their connection to thermodynamics.  Kinetics: Maxwell-Boltzmann distribution, reaction rates and orders, elementary reactions and mechanisms, the steady state approximation, activation energy, catalysis There are two sections of Chemistry 271, each including different special topics that are extensions of the core material above. This section is the “bio-flavored” one, as I am a biophysical chemist. Time permitting, the special topics we will cover are listed below:2  Acid-base: Modulation of protein folding and enzymatic activity and mechanism by pH.  Thermodynamics: Theory and application of DNA hybridization (duplex formation).  Redox: Real batteries and electrodes; alternative metabolic lifestyles among prokaryotes.  Kinetics: fundamental pharmacokinetics; blood as beaker. Relationship to Other Sections and Courses Prerequisites for this course include Chemistry 131, 231, and 241, all of which I hope you remember well. We will use some calculus as well, although you will not need to use it for assignments or exams. Some of this course may be review for you, but I think there will be new material for all. The two lecture sections of Chemistry 271 (this one at 12 and Dr. Mignerey’s at 9) have independent schedules and will cover different material, especially in the extension sections. Exams are independent. You are strongly advised to attend the lectures for the section for which you are registered. The sections will have similar expectations of students, so your section choice should not affect your grade. The Discussion sections for this class are required. There may be material that is presented in only in Discussion for which you will be responsible on exams. There will be two short required quizzes given in Discussion. You will be notified at least a week before each quiz. You are permitted to attend different discussion times if it is okay with Sarah, but as above you are strongly urged to remain with this section of the course rather than attending any of the 21xx discussions. Many of you are concurrently taking the bioanalytical chemistry laboratory course, Chemistry 272, with Dr. Lee Friedman. Dr. Friedman and I have attempted to coordinate coverage between lab and lecture, but we may not always be successful. Chemistry 272 is a stand-alone course, and the grading policies and the curve or lack of same for the two classes are completely independent. This course sequence is somewhat unusual, and we still are working the kinks out of the SmartWork system. Please bear with us as we continue to smooth rough edges, and feel free to send feedback: the best way to do this is to participate in the CourseEvalUM program as described by the Provost: Your participation in the evaluation of courses through CourseEvalUM is a responsibility you hold as a student member of our academic community. Your feedback is confidential and important to the improvement of teaching and learning at the University as well as to the tenure and promotion process. Assignments, Procedures, and Grading The breakdown for points (500 total for the class) is as follows: Quizzes and homework: 100 points. I anticipate one graded problem set (20 points), two discussion quizzes × 15 points each, and a total of 50 points awarded for SmartWork homework. I will also assign ungraded problems. Thoughtful completion of all assigned work, whether or not it is graded, is strongly correlated with overall success! Hour exam 1: 100 points Hour exam 2: 100 points Final exam: 200 points The exams will be difficult. You are not expected to get 90% to get an A. When in real life do we ever really expect to approach perfection? Formal


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