CHEMISTRY 140

North Seattle Community College Winter 2005

Chemistry 238: Organic Chemistry Lab

Course meeting times: TTh, 6:00 — 9:10 p.m.

Lectures, discussions and labs will be held in AS 1515

Text: Pavia, Lampman, Kriz, and Engel, Introduction to Organic Laboratory Techniques: A Microscale Approach, 3rd ed. (abbreviated PLKE)

Other materials:

• Lab coat or apron (optional)

• Calculator (required, especially for exams)

• Lab notebook (required; sewn binding, not glued or spiral-bound)

Course purpose: This course is the first quarter of the two-quarter organic chemistry lab series. It will introduce you to various organic chemistry laboratory procedures and techniques, including simple syntheses, separations, extractions and purifications. In addition, you will learn about infrared spectroscopy and its use in organic compound characterization. Finally, you will become familiar with organic chemistry lab safety procedures and working with extremely small quantities of chemicals. CHE 231 is a prerequisite for the course.

Instructor: Tracy Furutani Office: IB 2422A

Phone: 528-4509 Office hour: TTh, 5:00 – 5:50 p.m.

e-mail: tfurutani@sccd.ctc.edu

website: http://faculty.northseattle.edu/tfurutani

Grading: Lab reports 10 * # days on that lab 150*

Safety quiz 10 points 10

Tests 3 at 40 points each 120

Lab notebook 10 points 10

Subjective grade 10 points 10

Total 300 pts

The total number of points will be converted to a percent of the total points possible and the final grade will be determined as follows:

4.0 96.0-100% 2.4 76.0-78.4

3.8 93.5-95.9 2.2 73.5-75.9

3.6 91.0-93.4 2.0 71.0-73.4

3.4 88.5-90.9 1.8 68.5-70.9

3.2 86.0-88.4 1.6 66.0-68.4

3.0 83.5-85.9 1.4 63.5-65.9

2.8 81.0-83.4 1.2 61.0-63.4

2.6 78.5-80.9 0.0 Below 61%

This schedule is subject to a minimal amount of change.

Lab lecture: I will lecture on each lab during the lab period before the lab begins. You are responsible to obtain notes from a fellow student if you miss a lecture.

Attendance: In general, you will performing the experiments individually, so you cannot rely on another person to get lab data. Show up to every class meeting. Due to space and time constraints, you cannot make up an exam or a lab. If you miss a lab you cannot make it up and you will receive a 0. *At the end of the quarter the lowest twenty-point lab score will be dropped, which is why even though there are 17 lab days, there are only 150 points possible from lab reports.

Lab reports will consist of a pre-laboratory exercise (“prelab”) and a lab results report.

The pre-lab should be written in your notebook and a photocopy should be given to your instructor at the beginning the experiment. You will not be allowed to start the experiment unless the prelab is complete. The prelab will generally consist of a purpose and a materials and methods section, unless that particular lab calls for something else (check the individual lab handout).

1) The purpose section is a few sentences outlining the experiment’s objective(s). Mention what techniques you will be using, what data you are collecting (and why you are collecting it) and, if appropriate, what compounds you are synthesizing. It is also appropriate to include any synthesis schemes (i.e., chemical equations using organic molecule representations).

2) The materials and methods section should contain the experimental procedure in your own words (including sketches of apparatus). This section should also list the reagents (and quantities) used, and indicate possible side reactions and by-products. See page 24 of PLKE for an example.

The lab result report is based on the handout that will be posted on the course web page prior to the lab date. The report handout will have some questions to be answered.

Lab reports will be due at the beginning of the lab period immediately after the period in which the experimental work is finished. The entire lab report must be turned in at the same time. Reports turned in after the beginning of the lab period will be marked late. Lab reports turned in up to one day late will be marked off 25%. Lab reports turned in between 1-7 days late will be marked off 50%. Lab reports turned in more than one week late will be given no credit.

Even though you will complete the experimental work in pairs, all lab report must be written up individually. Although you may discuss the lab report with other students, the report must be written in your own words. If there is evidence of copying for any part of the lab, all students involved will receive a grade of zero on the lab report. If this happens a second time during the quarter, you will receive a grade of zero on the lab report and your grade in the course will be dropped one full grade point. Plagiarism and cheating are quite serious offenses in academia.

Lab notebooks: Purchase a bound notebook at the bookstore or other supplier. Spiral notebooks are not acceptable. When performing an experiment, write down the procedure as you do it and note all observations. During all times in the lab, you must have your lab notebook open and you must record data/observations in real time, i.e. as you see it. A good lab notebook is one that would allow another person to replicate the experiment using only your notebook. Please read the section on “Lab Notebooks” on page 21 of PLKE.

Lab Tests: There will be three lab tests, each worth 40 points. The first two will be written. The third one will consist of a written portion and a lab practical. The practical will require that you perform either a crystallization or an extraction procedure. The safety quiz will be given sometime in the first few weeks of the course.

Subjective grade: This is my assessment of your ability to perform organic chemistry techniques efficiently, intelligently and, above all, safely. In addition, I will also be assessing your use of the lab notebook at appropriate times and your ability to follow instructions and work with your colleagues.

Chemical sensitivities: Due to the increasing numbers of individuals developing chemical sensitivities and the increasing awareness of such conditions, everyone who attends this class is asked to refrain from wearing any fragrance or perfume. The greatest feasible efforts will also be taken to ensure a fresh air environment free of not only the above-mentioned fragrances but also potentially harmful substances such as carbon monoxide, formaldehyde, carpet odor, organic solvents, etc. Individuals who are unsure of the importance of this policy should see the Associate Dean for additional information. Also, if you are pregnant or nursing, you should discuss the situation with your doctor.

Cell phones and pagers: Please turn these devices off or switch them to “vibrate” mode during class.

Dates to remember:

Last day to withdraw without a W January 18

Last day to drop course February 25

Last day of instruction March 17