Category Archives: Uncategorized

Class Data Analysis

Data analysis will play a larger role in the new collaborative Organic Chemistry curriculum. I performed three experiments Fall 2007 where students entered their data before leaving the lab. The students were then directed to analyze the “class data” as part of their lab report. This is typically not done in traditional experiments for unknown […]

Week 10: Synthesis of Chemiluminescent Esters

1) Source(s) This lab was developed by a team of students from a recent JCE article: “Synthesis of Chemiluminescent Esters: A Combinatorial Synthesis Experiment for Organic Chemistry Students,” Duarte, Robert; Nielsen, Janne T.; Dragojlovic, Veljko. J. Chem. Educ. 2004, 81, 1010. A good resource for this experiment is a website: “Chemiluminescence of Oxalate Esters” http://www.chem.leeds.ac.uk/delights/texts/VV_exp_26.htm […]

Week 7: Identification of a Conjugated Diene from Eucalyptus Oil

This experiment was adapted by a group of 4 students from: Lehman, J. W., Lehman, J. W., Operational organic chemistry, & 3rd. (2004). Microscale operational organic chemistry : A problem-solving approach to the laboratory course. Upper Saddle River, N.J: Pearson Prentice Hall. This was an interesting find, I thought. I have done a couple of […]

Week 6: Two Student Developed Experiments

Oxidation of Cinnamyl Alcohol using Pyridinium Chlorochromate: 1)      Source(s) Experiment #14 in Mohrig, J. R. “Modern projects and experiments in organic chemistry: Miniscale and standard taper microscale.” (2003) New York; Basingstoke: W.H. Freeman; Palgrave Macmillan. 2)      Changes to published procedure ○We did not visualize the TLC with p-anisaldehyde. ○We did not pre-mix the PCC, NaOAc, […]

Why do we repeat experiments?

Don’t Repeat Yourself, “DRY” may be central tenet of computer programming doctrine, but is it not part of the chemist’s credo. Scientists spend a significant amount of time repeating procedures and even experiments in the quest to push back the frontiers of human knowledge. If we want to create and discover new knowledge, why do […]

Week 4:

This week, most of the seven groups repeated their experiment. For a couple, this week was the first time their experiment yielded acceptable results. For others, they had a chance to fine-tune already acceptable experimental results from Week 3. Several groups adjusted the scale of their experiment. We are working with “macroscale” glassware. Working with […]

Why do we do Sophomore Organic Chemistry Labs?

Traditionally course laboratories are designed to reinforce and complement classroom instruction at the same time that students acquire laboratory skills commensurate with their level. In Sophomore Organic Chemistry (SOC) concepts taught in the lecture sections usually have to do with reaction chemistry and spectroscopic techniques such as ultraviolet-visible (UV-vis), Infrared (IR), and Nuclear Magnetic Resonance […]

The Third Week:

We did some real chemistry this week. Almost too real, if you know what I mean. If you don’t know what I mean, read on. Students did the published experimental procedures that they found and selected the first two weeks of lab period. Students soon discovered that 1) significant modifications are sometimes needed to adapt […]