Prepared by: Joyce Baumann Spring 2013 MOHAWK VALLEY COMMUNITY COLLEGE UTICA, NEW YORK Center for Mathematics, Engineering, Physical Science & Applied Technology COURSE OUTLINE I. Catalog Description CH246--Quantitative Analysis C-3,P-4, Cr 5 Prerequisite: CH141 General Chemistry 1 and CH142 General Chemistry 2. This course introduces analytical chemistry and develops the skills and perspectives necessary to solve problems. Topics include sampling, gravimetry, titrimetry, stoichiometry, equilibria, redox, potentiometry, and spectrophotometry. . Samples are chosen to illustrate typical industrial and environmental problems. As time allows, field trips supplement the campus experience. II. Texts and Laboratory Materials Text: Analytical Chemistry, Gary D. Christian, latest Edition, Wiley Publishing Laboratory Supplies Laboratory Notebook III. Student Learning Outcomes Upon the completion of Quantitative Analysis, the students will be able to: 1. Demonstrate an ability to work in a laboratory safely and efficiently. 2. Demonstrate an ability to maintain a notebook. 3. Demonstrate an ability to follow procedures to the letter (protocol). 2 4. Write chemical reactions to explain experiments. 5. Prepare solutions correctly. 6. Demonstrate the necessary calculations of analytical chemistry. 7. Communicate in written reports on the work. 8. Discuss the literature of analytical chemistry. 9. Demonstrate responsibility for their actions. 10. Explain in words the key importance of analytical chemistry to industry, environment, and clinical chemistry. IV. General Topical Outline Lecture topics should be chosen to correlate as closely as possible with the laboratory and to supplement and extend the practice. Individual instructors may choose to meet these and the general course objectives in different ways. The following is a recommended outline. In general, the theory should follow the practice in order that students can more clearly see the application. Weeks Text Chapters Topics 1,2 1,22 Orientation and review of basic concepts 3 2 Data processing, errors, statistical analysis 4 3 Stoichiometric calculations 5 5,6* Sampling, sample preparation, and gravimetric analysis 6,9 6,7 Volumetric analysis and Acid-Base systems 10,11 9 Precipitation titrations and solubility. Ksp 11,12 11,12 Oxidation reduction and potentiometry 13 8,17,6 Complexiometric titrations and ion exchange 14,15 13 Instrumental Methods: Electrodeposition 14 Spectrometry 16,17 Separations 3 *For sampling, it is recommended that the following pamphlet be used as a supplement to the text "Principles of Environmental Sampling", American Chemical Society, latest edition. QUANTITATIVE ANALYSIS LABORATORY SCHEDULE The laboratory is where the student applies the knowledge gained from the lecture and assigned readings to actual practice. The success of the course depends directly on the laboratory experience. Lecture is designed to support and extend the laboratory. The text describes procedures in a general way. It is up to the student to make decisions as to how the work is carried out. Major emphasis is placed on accuracy and precision. A suggested laboratory sequence follows. It should be pointed out that many experiments require long waiting times. Efficient use of laboratory time requires that students be able to proceed to the next experiment in such cases. In general, a new experiment should be introduced each week and students allowed to proceed through them at their own pace. Week Text Exp. No. 1 1,2 Title of Experiment and Notes Check In, safety, orientation, balance instruction – (dry unknowns for Exp. 3) 2 3 Gravimetric Determination of Chloride (3 weeks, many waiting periods) 3 2 Use of Pipet and Buret (instructor may wish to supplement text) 4 6 Volumetric Phthalate, Report % KHP 5 7 Determination of Soda Ash 6 19 pH Titration of Soda Ash 7,8 9 Handout 12 Kjeldahl, Air Pollution, and Hazardous Waste (2 weeks) Determination of Chloride as a water pollutant, ajan's Method 10 11 15 16 Analysis of Iron Ore with Dichromate Analysis of Hazardous Oxidizing Waste with Iodine 4 12,13,14,15 R.R.Note 1 Instructor Option: One period may be used as a field trip to visit industries or waste sites involving heavy metal use or environmental problems. Samples may be brought back for analysis. 12 Handout Electrolytic Determination of Copper in an Ore or Industrial Sludge (long waiting periods) 13 26 Spectrophotometric Determination of Manganese and Chromium in a Mixture 14 33 Anion Exchange Separation of Cobalt and Nickel followed by EDTA titration 15 Note 2 Make-Up, lab Practical, Check-Out Note 1: Experiments during Weeks 12 - 15 require special equipment. Students should cycle through these in a Round Robin sequence to insure hands-on experience with the instruments for each student. Note 2: In general, students will continue into CH229, Chemical Instrumentation, and should keep the same assigned lockers. Exceptions should be rare enough to take care of informally in terms of the Checkout. The lab practical can be made a part of the final exam.