Chem
254 – Quantitative Analysis Laboratory Syllabus –Fall
Semester 2017
Instructor:
Dr. Peter Allen, pballen@uidaho.edu.
208-885-5807
Office:
Renfrew Hall001, 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 while handling chemicals. Only departmentally approved
safety goggles will be permitted in the laboratory. You can buy these 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. Itis 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.
Week 1: No lab
Week 2: No lab
Week 3: Introduction to Quantitative Analysis; lab safety;
check in; clean glassware
Week 4: Experiment 1: Introduction to the Analytical Balance
and Volumetric Glassware
Week 5: Experiment 2 Sampling in Analytical Chemistry
Week 6: Experiment 3: Preparation of a Standard Sodium
Hydroxide Solution, Determining the Endpoint.
Week 7: Experiment 4: Potentiometric Analysis of Acid in
Soft Drinks
Week 8: Tuesday – Exp 4 cont.;
Thursday - Lab Exam (Exp. 1-4)
Week 9: Experiment 7: EDTA Determination of Total Water
Hardness
Week 10: Experiment 8: Determination of Vitamin C in a
Tablet Endpoint Colors
Week 11: Experiment 9: Ion Selective Electrode
Week 12: Experiment 10: Spectrophotometric Determination of
Iron in Water
Week 13: Experiment 11: Gas Chromatography
Week 14: Thanksgiving Break
Week 15: Lab Exam
Week 16: Check out
Jan. 31 - Feb. 4