CEM 262 — Quantitative Analysis — Fall 2014 Syllabus and Course Calendar Instructor: Dr. Thomas P. Carter Office: Room 383A Chemistry (on the third floor, down the blue hallway) Phone: 355-9715 ext. 280 Email: carter@chemistry.msu.edu or cartert@msu.edu Office Hours: After class, or drop by anytime, but preferably by mutually agreed appointment. Course Web Site: http://www.chemistry.msu.edu/courses/cem262 (I post all things here). Lecture: Mondays and Wednesdays, 8:00 AM – 8:50 AM in Room 101 Biochemistry Lab: Room 304 Chemistry Recitation: Rooms vary by section. See http://schedule.msu.edu for details. Attendance in lecture, recitation, and lab is required. TAs: Chengpeng Chen (chench62@chemistry.msu.edu), Steven Hurney (hurneyst@chemistry.msu.edu), and Hannah Mize (mizehann@chemistry.msu.edu). Required Texts: Exploring Chemical Analysis, 5th Edition, Daniel C. Harris, W.H. Freeman and Company, 2013 CEM 262 Quantitative Chemical Analysis Laboratory Manual 2013-2014 (Downloadable only from the LON-CAPA website: http://lon-capa.msu.edu/) Required Materials: (1) Basic scientific calculator (with the capability of performing logarithms) (2)Laboratory notebook with numbered, bound pages (a ~$3 composition notebook works well, lined or quad-ruled, with the pages hand-numbered prior to coming to lab) (3)Safety goggles (MUST be splash proof, meeting OSHA-ANSI 279.1-1979 specifications) Course Grading: This course will be graded on what is very close to a straight scale. I reserve the right to alter the scale if I deem it necessary, but under no circumstances will these thresholds be raised making it more difficult for you to achieve a good grade. The overall course grade will be calculated according to the following breakdown: Experiments 50% Laboratory Performance 5% Recitation Participation 5% Homework (LON-CAPA) 5% Hour Exam 1 10% Hour Exam 2 10% Final Exam 15% –1– Percent Score Course Grade 90–100% 4.0 85–89% 3.5 80–84% 3.0 75–79% 2.5 70–74% 2.0 65–69% 1.5 60–64% 1.0 < 60% 0.0 CEM 262 — Quantitative Analysis — Fall 2014 Syllabus and Course Calendar TENTATIVE Lecture Schedule Lecture Date Assigned reading 1 August 27 Chapters 1-1 — 1-4 Lab manual thru p. 12 Subject Course operation; laboratory basics; review of volumetrics September 1 (Labor Day) — NO CLASS 2 September 3 Chapters 6-1 — 6-3, 10-4 — 10-6, 3-1 — 3-3 3 September 8 Chapter 4-1 — 4-3 4 September 10 Chapters 3-3, 4-2, 4-4 5 September 15 All of Chapter 8, Chapter 10-1 — 10-3 6 September 17 Chapter 1-5 Chemical equilibrium and activity (introduction/review) 7 September 22 Chapter 8-3 — 8-7 Solution chemistry of acids, bases and salts – Ka, Kb, Kw 8 September 24 Chapter 9-1 — 9-5 Buffers, The Henderson-Hasselbalch equation 9 September 29 Lab manual Ka and equivalent weight for a weak acid (Expt. 2) 10 October 1 Chapter 9-6 Titration curves and acid-base indicators 11 October 6 Chapter 11-1 — 11-3 Titrimetry basics; sig figs; characterization of errors Calculation of statistical values and tests Accuracy and precision; random, systematic and gross errors; Grubbs test and Student’s t-test. Aqueous solution chemistry; strong and weak acids/bases Polyfunctional acids and bases; alpha values; amphiprotic salts Examination 1 October 8 12 October 13 Chapter 12-1 — 12-2 Electrolyte effects; activity, ionic strength Sparingly soluble salts; Ksp 13 October 15 Chapter 6-4 14 October 20 Chapter 7-1 — 7-3 15 October 22 16 October 27 Chapter 13 Complexation and metal-ion titrations 17 October 29 Lab manual EDTA equilibria and calculations (Expt. 4) 18 November 3 19 November 5 Chapter 16-3 Oxidation-reduction reactions (balancing) and redox titrations 20 November 10 Lab manual Iodometric titrations (Expt. 5) Gravimetric methods Equilibrium calculations Electroanalytical chemistry Examination 2 November 12 21 November 17 Chapters 18, 19-1, 19-2, 19-4 22 November 19 Lab manual 23 November 24 Chapter 4-5 — 4-6 24 November 26 Lab manual Introduction to spectroscopy; absorbance and transmittance; Beer’s law Standard addition, external standards; (Expt. 6) Calibration curves, linear least-squares regression; solving multicomponent absorbance of mixtures Expt. 7 THANKSGIVING BREAK — No labs for anyone this week 25 December 1 Sensitivity and accuracy of spectroscopic measurements 26 December 3 Review ? Final Examination, 101 Biochemistry, Thursday December 11, 7:45-9:45 a.m. –2– CEM 262 — Quantitative Analysis — Fall 2014 Syllabus and Course Calendar Experiments (50%): This is a quantitative analysis course, and the grade for each experiment will be based almost entirely on the accuracy of your results. Important keys to your success are your use of proper laboratory techniques and careful planning. Labs are considered timed practical exams, and as such, you should work alone, and not provide to or accept any data or results from anyone else. You will submit your lab results on a “report card” (provided by your TA) no later than the beginning of your recitation period on the due date for your Section (see the table below). Cards turned in after the due date/time will be assessed a penalty of 10 points. No lab results will be accepted after 5:00 pm on the last day of classes, Friday, 4/25/2014. No lab results will be accepted other than by submitting the normal “report card” to your TA or to me. NO E-MAIL SUBMISSIONS WILL BE ACCEPTED. Experiments 1, 3, 4, and 5 are worth a maximum of 100 points each. Experiments 2, 6, and 7 are worth a maximum of 110 points each because properly formatted graphs must be prepared with graphing software (e.g. Microsoft Excel or Synergy’s KaleidaGraph, etc.) and submitted with the report cards for these experiments. In this way, the maximum points available for all 7 experiments is 730 points. You may redo an experiment as many times as you like in the allotted time, but your grade will be determined by the LAST results you submitted, NOT by your best results! Each time you redo an experiment you must obtain a different unknown from your TA. You may attend only the lab session to which you are enrolled. Exceptions may be made in the case of excused absences, but only with prior approval from me – not your TA. To obtain an excused absence make-up, be prepared to provide evidence. Also, it is the responsibility of students who plan to be absent from class at certain times throughout the semester, due to religious holidays or other valid reasons, to make arrangements in advance with the instructor. If a make-up exam is approved, the instructor retains the right to determine the content of the exam and the conditions of administration, giving due consideration to equitable treatment. Labs begin the SECOND WEEK of classes. The due dates for the experiments are given by the week in which they are due in the table below: Week # Week starting on Monday: Guideline experiment start date 1 August 25 NO LABS FOR ANYONE 2 September 1 Check-in/safety training, Start Experiment 1 3 September 8 4 September 15 5 September 22 6 September 29 Start Experiment 3 7 October 6 Start Experiment 4 8 October 13 Start Experiment 5 9 October 20 10 October 27 11 November 3 12 November 10 13 November 17 14 November 24 15 December 1 Due Date for lab report Start Experiment 2 Experiment 1 Experiment 2 Experiment 3 Start Experiment 6 Experiment 4 Start Experiment 7 Experiment 5 Thanksgiving Week NO LABS FOR ANYONE Experiment 6 Exp 7. and any other lab results due at beginning of the Final, Thursday Dec. 11th –3– CEM 262 — Quantitative Analysis — Fall 2014 Syllabus and Course Calendar Important: Once the laboratory course has started, you perform the 7 experiments at your own pace. The Guideline Dates indicated in the table above show the latest date the experiments should be started, and if these guideline dates are followed, you should have no problem in completing the labs in the time allotted, though not leaving any time for redoing any experiments. The Due Dates indicated for the reports for the individual experiments are not flexible. Any results turned in after the due date will be penalized 10 points. As noted above, and if time allows, experiments may be repeated in an effort to improve your grade, and results from the redone experiments do not have to follow the timetable indicated above, but if they’re turned in after the Due Date, the 10-point penalty applies. Remember: your last results determine your grade, not your best results. You may turn in results early without penalty. During your lab session, you must be properly attired, have appropriate safety goggles, and you must have your laboratory notebook or you will not be allowed to work in the lab. Laboratory performance/laboratory notebook (5%): Five percent (5%) of your course grade will be based upon your laboratory/notebook performance as assessed by your TA. Your use of proper safety practices, care of equipment such as balances and pH meters, your ability to work independently, willingness to understand and follow instructions, and proper use and maintenance of your laboratory notebook are among the things that will be considered in the assessment of this portion of your grade. Guidelines for your notebook (including an example lab entry) are provided in the beginning of the lab manual. Unannounced notebook inspections will be conducted by your TAs throughout the term. Any scraps of paper containing laboratory data will be confiscated during an inspection, or at any other time they are discovered. It is imperative to ALWAYS properly record all of your data directly into your lab notebook. Homework (5%): Homework assignments will done through the LON-CAPA system which is accessed over the Web at http://lon-capa.msu.edu (be sure to enable pop-ups in your browser for this web site). Log on to the LON-CAPA system using your MSUNetID. Assignments are given periodically, each of which include several problems to work. You can make as many as 99 attempts to solve each problem, but grading is based only on whether you answered the problem correctly; the number of attempts it took you makes no difference. The goal is for you to get practiced in working problems and thereby improve your problem solving skills. Recitations (5%): ATTENDANCE IN RECITATION IS VERY IMPORTANT TO YOUR SUCCESS IN THIS COURSE. TAs will be demonstrating proper lab techniques, providing insight into the best strategy for preparing and performing experiments, and discussing the calculations involved in reporting your experimental results. TAs will also answer questions about the concepts presented in lectures and homework problems. Lab report cards will be turned in at the BEGINNING of recitation on tor before the due date or they will be marked “late”, and receive the 10-point penalty. There will be in-class assignments and quizzes to facilitate the understanding of lecture topics. Your attendance and, most importantly, participation & performance in recitation will be evaluated by your TA and considered as 5% of your grade. Examinations (35%, combined) There will be two in-class one-hour examinations, on Wednesday, October 8, 2014 and Wednesday, November 12, 2014. Each of these examinations will test the course material which has been covered up to that point, and each will be worth 10% of your final grade. No cellphones/computers/tablets, etc., may be used during an examination; only a dedicated calculator is allowed. The Final Examination will be on Thursday, December 11, 2014 at 7:45–9:45 AM in Room 101 Biochemistry, and will be a comprehensive examination on all the material (lectures and experiments) covered throughout the semester. The Final is worth 15% of your final grade. –4–