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University of the Philippines College of Science Institute of Chemistry CHEMISTRY 26.1 ANALYTICAL CHEMISTRY LABORATORY Course Description: Demonstration Description: Demonstration and application of principles of analysis with emphasis with volumetric methods and stoichiometry; survey of common instrumental methods Course Goals: At the end of the course, the students must b e able to: 1. Apply the basic analytical laboratory techniques used in chemical measurements 2. Develop the discipline of chemical analysis and research, and appreciate the theory learned in analytical chemistry in laboratory No. Friday Jan 13
Wednesday Jan 18
Friday Jan 20
Wednesday Jan 25 Friday Jan 27
Topic/Activity -Introduction -Locker Check-out -Collection of Lab Manual Fees -Orientation and Class Policies -Distribution of Lab Manuals -Diagnostic Exam -Pre-lab discussion: E1 -Discussion: Error Propagation -E1: Application of Statistical Concepts in the Determination of Weight Variation in Samples
-Discussion: Way of Expressing Concentration -Pre-lab Discussion: E2 -Demonstration of Proper Laboratory Techniques -E2: Solution Preparation
Wednesday Feb 1 Friday Feb 3
-Post-lab Discussion: E1 -Post-lab Discussion: E3 -E3: Chemical Kinetics: The Iodine Clock Reaction
Wednesday Feb 8
-Pre-lab Discussion: E4 -E4: Common Ion Effect and Buffers
Requirement/s -Information Sheet -Locker Check-out form
-Lab Manual Fee Php 160
-Use an analytical balance properly -Apply statistical concepts in analysis of measurements
(10) 25 centavo coins Forceps
-Due: E1
-Calculate the amount of reagent needed in a solution -Prepare solutions properly
-Explain the concepts of reaction rate and reaction mechanism -Determine the rate law using initial rates method -Calculate the reaction’s activation energy using Arrhenius equation -Explain the concept of common ion effect -Prepare buffer solutions -Calculate pH of the solutions
-stopwatch -ice
Due: E3*
Wednesday Feb 15
-E5: Determination of the Solubility Product Constant of Calcium Hydroxide
Friday Feb 17
-E6: Quantitative Analysis of Soda Ash by Double Indicator Titration
Wednesday Feb 22 Friday Feb 24 Wednesday Mar 1 Friday Mar 3 Wednesday Mar 8
-Determine the solubility product constant of calcium hydroxide by means of titration -Demonstrate common ion effect -Perform doubleindicator titration -Determine the purity and composition of soda ash
Due: E4
-2 L boiled distilled water
-Due: E5 -Due: E6
-Review for Midterm Exam -Midterm Exam -Pre-lab Discussion: E7 -E7: Quantitative Determination of Total Hardness in Drinking Water by Complexometric EDTA Titration
-Pre-lab Discussion: E8 -E8: Quantitative Determination of Dissolved Oxygen Content by Winkler Redox Titration (Day 1) -E8: Quantitative Determination of Dissolved Oxygen Content by Winkler Redox Titration (Day 2) -Post-lab Discussion: E7 -Pre-lab Discussion: E9 -Pre-lab Discussion: E10 -E9: Determination of Electrode Potentials
Friday Mar 24
-E10: Quantitative Determination of the Purity and Dissociation Constant of Potassium Hydrogen Phthalate by Potentiometric Tritration
Wednesday Mar 29
-Post-lab Discussion: E8 -Post-lab Discussion:E9
-Perform complexometric EDTA titration -Determine the total hardness in drinking water sample -Prepare the solutions needed for Winkler titration
-330 mL Viva mineral water
-Perform Winkler method -Determine dissolved oxygen in water sample
-Explain the concepts of electrochemistry -Set-up a simple galvanic cell -Set-up an electrolytic cell -Calculate standard reduction potential -Perform potentiometric titration -Determine the purity of KHP -Derive the acid dissociation constant of KHP from the potentiometric titration data
-Post-lab Discussion: E10 -E11: Quantitative Determination of Copper (II) Concentration by Spectrophotometry
-E12: Quantitative Determination of Total Ion Concentration by Ion Exchange Chromatography -Post-lab Discussion: E11
-Due: E10 -Explain the concept of Beer’s Law
-Use a UV-Vis spectrophotometer -Determine the copper (II) concentration of an unknown solution using standard calibration method -Perform a graphical analysis using linear regression -Explain the concept of chromatography as a separation technique Due: E11**
-Post-lab Discussion: E12
Due: E12
-Practical Exam -Review for Final Exam -Final Exam -Locker Check-In
All unmarked reports are in Answers to Question format *E3- individual formal report (mock FR; to be grades as ATQ) *E8- individual formal report **E11- formal report by pair Class Requirements: Individual: -Laboratory Manual -(1) Laboratory Notebook (50 sheets only, lesson plan style, covered with class color and plastic) Pair: -Wash bottle -Liquid Detergent (in PET Bottle, diluted) -(5) Pasteur pipette -masking tape/sticker label -(5) spatula
-Laboratory Gown -Safety goggles -(1) aspirator -(2) tissue paper roll -(2) round rag -(1) filter paper (whole) -permanent marker
Source Text: - Analytical Chemistry Laboratory Laboratory Manual by by UP Diliman Analytical Chemistry Academic Group -Fundamentals of Analytical Chemistry by by Skoog, et. al. -Quantitative Chemical Analysis by Analysis by Harris -Principles of General Chemistry by by Silberberg
Class Policies: 1. The class requirements should be brought at all times 2. Each student will work on each experiment with a partner or groupmates (in case of odd numbered-class numb ered-class or in certain experiments) 3. Each pair or group will be assigned a locker, which should be kept clean and s ecure at all times 4. Each student must follow the format prescribed for his/her laboratory notebook. Refer to page 1 of the manual 5. Each student must wear the prescribed personal protective equipment (PPE), which consist of the laboratory gown, goggles, closed shoes, properly tied hair and long pants, before performing an experiment. A student without complete PPE is considered absent. 6. Each student must submit the completed data sheet and a laboratory report (either an ATQ o r FR) two meetings after the last day of the experiment. Non -submission of a report gives the student a grade of INC, if the total standing of the student is passing. 7. A student is considered to be late if s/he goes in class 15-30 minutes after the class has started. A student is considered to be absent if s/he goes in class af ter 30 minutes into the class and s/he merits a grade of 0 for lab performance 8. No make-up experiments are allowed for any typ e of absence. A missed exam merits the student a grade of incomplete. 9. Broken glassware and/or equipment should be replaced within one week from occurrence of damage. 10. ACADEMIC DISHONESTY (COPYING IN EXAMINATION, USE OF CRADLE NOTES AND PLAGIARISM, AMONG OTHERS) IS NOT TOLERATED. A STUDENT CAUGHT IN SUCH ACTS MAY FACE EXPULSION FROM THE UNIVERSITY. Deadline of Dropping Subjects: Grading System Theoretical Midterm Examination Final Examination Quizzes Experimental Lab Performance (9) Answers to Questions (2) Formal Reports Practical Exam Total
40 40 10 75 30 40 65
269 < x < 300 257 < x < 269 245 < x < 257 235 < x < 245 223 < x < 235 212 < x < 223 201 < x < 212 190 < x < 201 180 < x < 190 150 < x < 180 < 150