SYLLABUS
CHM 3120LSect. 0011, 0012, 0013 Analytical Chemistry Laboratory
Mon, Tues, Wed12:30-3:20 Fall 2016
Instructor: Dr. Matthew Rex
Office/Phone:Chemistry room 208/ 407-823-1260
Email:
Office Hours:Mon, Tues, Thurs10:00-11:00am and Fri 1:00-3:00pm
GTA:Nirvani Mujumdar, Jacob Powell
Required Materials:
CHM 3120L laboratory manual (online)
Safety Goggles
Lab Coat
Scientific Calculator
Lab Notebook
Objectives:
By the end of this lab, you should be able to:
-Prepare and standardize standard chemical solutions
-Perform volumetric, potentiometric and complexometric titrations
-Construct and utilize concentration graphs
-Apply stoichiometric calculations to analytical problems
-Determine the quantity of unknown up to the state relative error
-Utilize drying oven, analytical balance, pH meter and UV-VIS spectrophotometer
Attendance: Attendance in the laboratory is mandatory for passing the lab. You must attend your scheduled laboratory section.Your lowest lab will be dropped from your final grade. Labs will only be rescheduled for excusable absences and lab space and time permitting. Excusable absences include illness (with signed doctor’s note), jury duty and/or military service. Attendance will be verified via lab reports, perception of the instructor and GTAs as well as your lab partners.
Plagiarism Statement:Plagiarism of any kind will not be tolerated. Any acts of plagiarism will result in an immediate failing grade in the course. Cheating of any kind on an examination, quiz or assignment will result in, at least, an “F” for that assignment and may be subject to appropriate referral to the Office of Student Conduct for further action.
If you work on a lab with a partner, your lab report must be in your OWN words. You may NOT copy their introduction and conclusions as your own. See the UCF Golden Rule for further information.
I will assume for this course that you will adhere to the academic creed of this University and will maintain the highest standards of academic integrity.
Lab Notebook:Each student will have a Laboratory Notebook to be used for recording laboratory work. It should be a bound (composition) notebook clearly labeled with your name, course name and number, as well as the dates in use. The majority of your notebook should be handwritten in blue or black ink. Leave room for a table of contents, start each new experiment on a new page and record all information (data, calculations, observations, changes to procedure) directly in the notebook.
Format of the notebook should include: the name of the experiment, the date, some sort of introduction or explanation of what you are doing, experimental procedure or a reference to your procedure, all data, calculations, tables and graphs when applicable. UNDERLINED PORTIONS FROM ABOVE SHOULD BE COMPLETED BEFORE COMING TO LAB EACH WEEK. Do not use any loose paper for your notes or calculations! Graphs or additional material may be glued, taped or stapled neatly into the notebook.
Reports: The general format includes the following sections:
Title page: Including the title of the experiment, your name, UNKNOWN NUMBER, and the date the experiment was performed.
Introduction: Describing the basis for the experiment. Use two to three complete sentences to state concisely, comprehensively and clearly the aim of the experiment
Experiment: Correct reference to the lab manual handout (experiment number and title). Note any changed made to the listed procedure.
Theory:
-Chemical reactions with correct stoichiometry (if any). The reagents and their roles in the various reactions.
-Chemical Structures of important reagents
-Important definitions
Results: Including tables of data, graphs or figures and data analysis.
Tables for raw data should be set up before you come to lab
Tables should be numbered consecutively, with a title at the top.
Calibration plots must have a descriptive caption and units on the axis. Number each plot sequentially.
Figures should be numbered consecutively with a title at the bottom of the figure.
Data analysis should include the determination of the identity and concentration of the unknown and equations for any linear regression curves.
Calculations: One sample calculation to show how the results and error were obtained.
Discussion:
-Any relevant observations you make during the experiment
-Discussion relating your results to the theory
-A brief summary of any sources of error associated with the analysis-precision of the results (standard deviation, RSD, confidence intervals, etc.)
- Reports are due after one week of completion of the experiment and should be handed in at the beginning of the following lab period.
- Penalty points can be assessed on lab reports. All reports will be penalized 10% for every day they are late, up to a maximum of one week.
- The report must be printed on white paper using any word processing or spreadsheet software.
References: any outside references/papers/articles used for reference or to aid in writing the report
Grading Evaluation:
Pre-lab, including notebook – 15 points
This includes knowledge of the lab procedure, correctly filling out the introduction, chemicals used and procedure portion of your lab notebook and answering any pre-lab questions before coming to class.
Performance Evaluation – 10 points
The instructor and GTAs will be circulating through the lab to answer questions, assist you and also to observe your overall laboratory technique and performance while doing and experiment. You can lose points through: poor safety practice, dirty work areas, leaving balances dirty or in disrepair, not understanding the lab, lateness, not finishing the lab within the allotted time.
Laboratory Report – 75 points
Introduction -5 points
Experiment-3 points
Theory-5 points
Results-8 points
Calculations-6 points
Discussion-8 points
Accuracy-40 points
Unknown Sample Analyses
Most experiments will involve the analysis of the chemical composition of an unknown sample. The grading for the unknown is based on the accuracy of the analysis, so it is in your best interest to know the procedure beforehand, follow instructions, and carry out the analysis as carefully as possible.
Grading for Unknowns
Exp. 2, 3,6,8,9 / Exp. 4, 5, 7,10 / Points0.00-0.99% / 0.00-1.99% / 40
1.00-1.99% / 2.00-3.99% / 38
2.00-2.99% / 4.00-5.99% / 36
3.00-3.99% / 6.00-7.99% / 34
4.00-4.99% / 8.00-9.99% / 32
5.00-5.99% / 10.00-11.99% / 30
6.00-6.99% / 12.00-13.99% / 28
7.00-7.99% / 14.00-14.99% / 26
8.00-8.99% / 15.00-15.99% / 24
9.00-9.99% / 16.00-16.99% / 20
10.00-10.99% / 17.00-17.99% / 16
11.0-11.99% / 18.00-18.99% / 12
12.00-13.60% / 19.00-20.60% / 8
>13.60% / >20.60% / 6
Note: Scales may be adjusted based on performance or extenuating factors. This is solely at the discretion of the instructor and GTAs.
Grade distribution will be as follows:
Lab Notebooks and Pre-Lab Questions- 15 pts per lab x 8 = 120 pts total
Lab reports- 75 pts per lab x 8 = 600 pts total
Participation- 10 pts per lab x 8 = 80 pts total
Final Exam- 100 pts x 1 = 100 pts total
Total points = 900 points
Grading Scale:
92-100% = A80-81% = B- 60-70% = D
90-91% = A- 77-79% = C+< 59% = F
87-89% = B+ 72-76% = C
82-86% = B 70-71% = C-
Note:Most labs are performed INDIVIDUALLY, some labs will be done in groups, but each student must submit an individual lab report everytime.
-All students will be scored and graded individually based on their performance
-All students will be expected to behave professionally. This includes spending lab time efficiently working towards the completion of the lab. All student will clean up after themselves or points will be deducted.
-The Syllabus is subject to modification during the semester at the discretion of the instructor and GTAs. In the event of changes or modifications a minimum of one week’s notice will be given to all students in class.
Accomodations for differently-abled students: Students with disabilities who qualify for academic accommodations must present a letter from the Office for Students with Disabilities (OSD) and discuss specific needs with the instructor, preferably within the first two meetings of the class. The OSD determines accommodations based on appropriate documentation of disabilities.
Financial Aid Quiz: All faculty are required to document students’ academic activity at the beginning of each course. In order to document that you began this course, complete the Financial Aid quiz on Webcourses by the end of the first week of classes or as soon as possible after adding the course, but no later than August 28th. Failure to do so may result in a delay in the disbursement of your financial aid. This quiz links you to an anonymous survey about your background so that this course can be better tailored to you. At the end of the survey, you will find the answer to the question in the financial aid quiz that you must enter into Webcourses to receive credit for completing the survey.
Safety Quiz: Laboratory safety is essential to understand before embarking on the laboratory component of this course. You must complete the laboratory safety quiz before August 30th. Failure to complete the laboratory safety training will prevent you from completing the labs.
Schedule of labs
Date / Experiment08/22-08/24 / Check in, safety, prep for Experiment 1
08/29-08/31 / #1-Preparing standard acid and base
09/12*, 09/06-07 / #3-Determination of soda ash content
09/19*, 09/13-14 / #4-Gravimetric determination of nickel
09/26*, 09/20-21 / #4-Gravimetric determination of nickel
10/03*, 09/27-28 / #5-Iodometric Titration of Copper and Brass
10/10*, 10/04-05 / #5-Iodometric Titration of Copper and Brass
10/17*, 10/11-12 / #6- Spectrophotometric determination of iron
10/24*, 10/18-19 / #6- Spectrophotometric determination of iron
10/31*, 10/25-26 / #7- Using a pH electrode for acid-base
11/07*, 11/01-02 / #8-Potentiometric determination of chloride
11/14, 11/08-09 / #9-EDTA titration of cobalt
11/21, 11/15-16 / #10-TLC and Paper Chromatography
11/28, 11/22-23 / Final Exam (worth 100pts), drawer check-out, clean up
*Note that due to the Labor Day holiday the Monday lab will be a week behind the Tuesday and Wednesday lab.