ANALYTICAL CHEMISTRY LAB, FALL 2010
(CHEM 123-01, CRN 82517)
SYLLABUS
Laboratory Manual: Experimental procedures will be handed-out for each experiment.
Laboratory Time:
Mondays, Wednesdays.: 2:10 PM – 5:00 PM
Room 215 Chemistry Building
Instructor:
Y. Gultneh
Office Room 211 Chemistry Building
Office Hours: M, W 11AM -12:30 PM or by appointment
Email: ygultneh@howard.edu
Required Materials:
Lab. notebook (Composition Bound Notebook)
Lab. safety goggles
Lock (Combination preferably)
Scientific calculator beneficial
Course Description and Objectives: This course is a companion lab course to the
Analytical Chemistry lecture course (CRN: 82516). It is designed to demonstrate correct
and safe laboratory techniques and performance of lab experiments that illustrate the
principles of analytical chemistry. Experiments in titrimetric, spectroscopic, gravimetric
methods, separations are included. It includes learning proper methods of experimental
measurements, record keeping, data organization interpretation and report writing. It also
includes a project in research of the analytical chemistry literature and a short
presentation on a topic in the field of analytical chemistry.
Pre-requisites: Successful completion of Gen. Chem. I and II lecture and lab courses.
Concurrently enrolled students in the companion lecture course or those who have
completed the lecture earlier
Attendance: Required attendance and on-time show for every lab. In case of unavoidable
absence, please contact the instructor.
Reading Assignments: The chemical and physical principles of the topic of each
experimental technique is introduced and discussed in the Chem. 122 textbook (and most
equivalent analytical chemistry textbooks). It is crucial that you read these materials
before the laboratory session and have a clear understanding of the theory relevant to the
experiment. Read the experimental procedure and plan ahead before the lab session.
This will enable you to pass the quizzes at the beginning of the lab and to use the short
lab hours efficiently which is needed to complete the experiments.
Lab. Safety: follow the safety regulations on the handout pages discussed at the first
meeting of the lab course. Wearing goggles at all times in the lab is required. Follow
experimental procedures carefully.
Laboratory Notebooks (Record Keeping): Accurately record all data and any
observations directly into your lab notebook in ink as you perform the experiment.
Use of any thing but the lab notebook and ink pen to record is not proper and will
not be accepted. Be precise in your measurements, priority is given to precision. At
the end of each lab, you must obtain the instructor’s signature in the notebook
below the recorded data.
Lab. Reports: At the completion of an experiment, prepare to write a lab report. The
lab report should have the title of the experiment at the top of the front page, the course
title, number and date of the report. It will also have the following subtitles:
1. Introduction: 1 (or 2) paragraphs to introduce the chemical principle of the
experiment and the goal you set out to accomplish in that experiment.
2. Experimental Procedure: A copy of the procedure handed out to you can be
attached.
3. Experimental Data: Table (with clear informative title) or your experimental data.
4. Calculations for each section of the experiment under clear labels to show the
reader what you are doing in that section. Please label all numbers, equations
used so the reader can follow your work.
5. Graphs, illustrations, diagrams: Look in any text book how diagrams and tables
are clearly labeled with captions or titles. Use these as models for your reports.
Draw any plots (graphs) on a graph paper (10 division/cm) label the graph and
in multiple plots are done on a graph, label each plot and clarify what they are
under the graph as clearly as possible.
6. Write conclusions as to what you have accomplished in the experiment.
REPORTS ARE DUE ONE WEEK AFTER THE EXPERIMENT HAS BEEN
DONE. REPORTS TURNED IN AFTER 2 WEEKS WILL NOT BE ACCEPTED.
Grading:
Lab Reports based on accuracy and precisions of analytical results,
format, clarity, calculations done, quality of discussion and
conclusions
Lab Work based on correct procedures and neatness
Lab Notebook based on completeness of data and clarity of work
Quizzes
Research Project
Final Exam
Letter Grades:
90 – 100
80 – 89
70 – 79
60 – 69
50 – 59
A
B
C
D
F
50 %
10 %
10 %
5%
5%
20 %
Safety: Know the safety rules (refer to the handout which you should paste to the inside
cover of your lab notebook for reference through the semester.
Academic Dishonesty: Will not be tolerated. If discovered, it will be dealt with in
accordance with the University’s policies. Students are referred to the Student’s
Code of Conduct and Judiciaries.
List of Analytical Experiments
Expt #
1.
Title of Experiment
Calibration of Volumetric Glassware: Calibration of a buret
Experimental Errors
Statistical Treatment of Data
2.
Acid-Base Titrimetry:
Preparation of 0.1 M HCl solution
Standardization of 0.1 HCl solution with sodium carbonate (primary
standard)
Titrations of anti-acid tablets
3.
Reduction-Oxidation Titrations:
Read introduction to redox reactions and redox titrations and the redox
reaction of KMnO4 and Na2C2O4
Preparation of 0.1 M KMnO4 solution
Standardization of a 0.1 M KMnO4 solution with sodium oxalate
Na2C2O4 (primary standard)
Determination of Fe in an ore sample
4.
Gravimetric Methods
Determination of Chloride in Soluable salt
5.
Complexometric Methods
Preparation and Standardizaion of Na2EDTA solution
Determination of total hardness of water
6.
Potentiometric (pH) Titrations
Identification of an amino acid
7.
Spectrophotometry
Determination of the pKa of an indicator
8.
Separations: Chromatography and Ion Exchange
Determination of Nickel and Cobalt in a mixture
9.
Separations: Solvent Extraction Methods
Determination of the distribution ratio of phthalic acid between water and
n-butanol
10.
Student project and presentation (in consultation with the instructor)
11.
Final Exam