Chem 254
Quantitative Analysis Laboratory – Syllabus
Instructor: Dr. Frank
Cheng; ifcheng@uidaho.edu; 885-6387, Web Site, Chem
253 Web Site
Office: Renfrew Hall
026A, Office Hours: M & W 2:30-4:30 or by appointment,
you are welcome to stop by any time, I may be available.
TA's and Ren 049 hours: TBA
Objectives: This
laboratory will introduce you to the skills required for accurate and
precise scientific measurements. All of science rests upon the
reproducibility of measurements.
Lab Manual: Please see
the links below.
Required Materials:
Padlock: One
key or combination padlock with up to 3/8 inch diameter shank.
Goggles:
It is Chemistry Department policy that safety goggles MUST be worn at
all times in the laboratory or handling chemicals. Only departmentally
approved safety goggles will be permitted in the laboratory. You can these
buy goggles from Chem Stores (REN 23).
Safety Issues: Open-toed
shoes or sandals, shorts, or short skirts may not be worn in the
laboratory. Pants/skirts should reach to the ankles. Students who are not
appropriately dressed for lab will be sent home to change. You must wear
goggles at all times. Failure to do so will result in immediate
expulsion from the lab and you will receive a grade of F for that lab.
Lab Techniques: In the lab
you will often be given a sample to analyze. You will be asked to
determine the exact concentration of one of the components of this sample
to an accuracy of 1 part per thousand (ppt). To
complete the analysis and obtain accurate results you will need to
carefully follow the lab procedures and TA’s instructions. The
techniques that you have been taught in high school or in general chemistry
may not be appropriate for this class, so be sure to listen to your TA and
read about lab techniques in the textbook.
Balances and Weighing: The balances
you will use are accurate to 0.1 mg, provided that they are level and
not abused. See your TA if you have any reason to believe that there is
anything wrong with the balance you are using or if you find spilled
chemicals in the balance room. Keep the balances clean. If you are
caught abusing the balances you will receive a grade of F for that lab. You
will be assigned a balance to use through this course. You will share this
balance with other assigned students. The TA will inspect this balance at
the end of lab. If it is not clean all students assigned to this particular
balance will have 20% deducted from their lab grade. It is not the job of
the TA to keep the balances clean. It is your duty.
Preparing for Lab: Read the lab
manual carefully before the lab. Also read the sections of your text that
discuss the theories and concepts covered by the experiment. Prepare for
the lab by writing (in your lab notebook): 1) the objective of the
experiment, 2) safety considerations, and 3) an outline of the experimental
procedures, including materials needed to perform the experiment.
Persons arriving more than 20 minutes late to
lab will not be allowed to complete the lab on that day. Labs are
scheduled for three hours. There will be no allowances for extra time. It
is imperative that you come prepared so that you can complete the lab in a
timely manner.
Quizzes: A quiz will
be given on first day of every new experiment, including Experiment 1.
The quiz will be based on material from the lab manual, including the
prelab questions/calculations, and will take ~10 minutes. Students who
arrive late for this quiz will be given a grade of zero. No makeup quizzes
will be given.
Lab Reports: Each written
lab is due one week after the completion of the experiment. No
late labs will be accepted. The lab report must be typed. If
more than two lab reports are not turned in, then a grade of “F” will be
assigned for the entire course. Lab reports are graded on accuracy,
precision, and answers to questions (if included), among other things. Not
all experiments will be graded in the same way. Your TA will provide more
specifics on grading and lab reports.
Makeup Labs: Makeup labs
are only allowed for excused absences. An excused absence is defined by
University of Idaho policy as a) an approved field trip or other official
UI activity; b) confinement under doctor's orders; c) call to military
duty; or d) leave of absence granted by student's academic dean. Students
must contact the Chemistry Laboratory Coordinator (Dr. Yuwei
Kan, REN 229, chem-labservices@uidaho.edu) in order to
schedule a makeup lab. In the case of University excused athletic events
and field trips, arrangements must be made a week prior to the absence. In
the case of sudden severe illnesses, notify the Chemistry Laboratory
Coordinator as soon as you realize that you are too ill to attend lab.
Bring in a note from your doctor stating that you were too ill to attend
lab as soon as you are back in classes. In all cases, make-up labs must be
completed within two weeks of the regularly scheduled lab session and prior
to check-out day, whichever comes first.
Lab Exams - 30 minute
exams will be administered on the assigned dates. The content will reflect
the material of the experiments. The exams are 10% of the course grade.
Your Teaching Assistant: Each section
has a different TA. If you have any questions on any material, please see
him/her during office hours in REN 049. If you can’t make it to your TA’s
office hours, try to see one of the other Chem 254 TAs during his/her
office hours.
Spring 2017
|
|
Fall 2016
|
January 12
|
No Lab
|
|
17-19
|
No Lab
|
August 23-25
|
24-26
|
No Lab
|
Aug. 30 - Sep. 1
|
Jan. 31 - Feb. 4
|
Introduction
to Quantitative Analysis; lab safety; check in; clean glassware
|
6-8
|
7-9
|
Experiment 1: Introduction to the
Analytical Balance (Youtube)
and Volumetric Glassware (Youtube)
|
13-15
|
14-16
|
Experiment 2 Sampling in
Analytical Chemistry
|
20-22
|
21-23
|
Experiment 3: Preparation of a Standard
Sodium Hydroxide Solution, Determining the
Endpoint.
|
27-29
|
Feb. 28 – Mar. 2
|
Experiment 4: Potentiometric Analysis of
Acid in Soft Drinks
|
October 4-6
|
7-9
|
Tuesday – Exp 4 cont.; Thursday - Lab Exam (Exp. 1-4)
|
11-13
|
14-16
|
Spring
Break
|
|
21-23
|
Experiment 7: EDTA Determination of Total
Water Hardness
|
18-20
|
28-30
|
Experiment 8: Determination of Vitamin C in
a Tablet Endpoint
Colors
|
25-27
|
April 4-6
|
Experiment 9: Ion Selective Electrode
|
November 1-3
|
11-13
|
Experiment 10: Spectrophotometric
Determination of Iron in Water
|
8-10
|
18-20
|
Experiment 11: Gas Chromatography
|
15-17
|
|
Fall Break
|
22-24
|
25-27
|
Tuesday - No
Lab; Thursday - Lab Exam (Exp. 7-11)
|
29 – December 1
|
May 2
|
Check Out
|
6
|