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Practical Applications of Organic Chemistry: Improving Student Knowledge of GC-MS through Qualitative Analysis of Nicotine in Electronic Cigarette Vapors
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Patel, Parth H.; Conrad, Kristofer L.; Pathiranage, Anuradha L.; Hiatt, Leslie A. – Journal of Chemical Education, 2020
Given student familiarity with electronic cigarettes (e-cigs), this lab uses a student-built smoke collection apparatus to collect e-cig vapors to teach students about gas chromatography-mass spectrometry (GC-MS). Students in a second semester, introductory organic chemistry course spent 1 week collecting e-cig vapors and 1 week qualitatively…
Descriptors: Organic Chemistry, Smoking, Electronic Equipment, Science Experiments
Characterizing Color with Reflectance
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Sattar, Simeen – Journal of Chemical Education, 2019
Pigments, dyes, and transition-metal compounds are made in courses across the undergraduate chemistry curriculum, but student characterization of these compounds' most striking features, their colors, seldom goes beyond verbal descriptions. Affordable, hand-held, fiber-optic reflectance spectrophotometers make it possible to advance students'…
Descriptors: Chemistry, Science Instruction, Undergraduate Students, Color
Solubility from the Femtoscale to the Macroscale
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Pollock, David W.; Truong, Giovanna T.; Bonjour, Jessica L.; Frost, John A. – Journal of Chemical Education, 2018
Solubility is frequently introduced at the high school and introductory college levels through the symbolic domain using net ionic equations and solubility product constants. Students may become proficient with spectator ion cancellation and skilled with algorithmic mathematical applications of solubility without obtaining a deeper understanding…
Descriptors: Spectroscopy, Chemistry, Data Collection, Science Experiments
A Robust, "One-Pot" Method for Acquiring Kinetic Data for Hammett Plots Used to Demonstrate Transmission of Substituent Effects in Reactions of Aromatic Ethyl Esters
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Yau, Hon Man; Haines, Ronald S.; Harper, Jason B. – Journal of Chemical Education, 2015
A "one-pot" method for acquiring kinetic data for the reactions of a series of substituted aromatic esters with potassium hydroxide using [supserscript 13]C NMR spectroscopy is described, which provides an efficient way to obtain sufficient data to demonstrate the Hammett equation in undergraduate laboratories. The method is…
Descriptors: Kinetics, Spectroscopy, College Science, Chemistry
Data Pooling in a Chemical Kinetics Experiment: The Aquation of a Series of Cobalt(III) Complexes--A Discovery Chemistry Experiment
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Herrick, Richard S.; Mills, Kenneth V.; Nestor, Lisa P. – Journal of Chemical Education, 2008
An experiment in chemical kinetics as part of our Discovery Chemistry curriculum is described. Discovery Chemistry is a pedagogical philosophy that makes the laboratory the key center of learning for students in their first two years of undergraduate instruction. Questions are posed in the pre-laboratory discussion and assessed using pooled…
Descriptors: Kinetics, Chemistry, Science Instruction, College Science
A Microcomputer-Based Data Acquisition System for Use in Undergraduate Laboratories.
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Johnson, Ray L. – Journal of Chemical Education, 1982
A laboratory computer system based on the Commodore PET 2001 is described including three applications for the undergraduate analytical chemistry laboratory: (1) recording a UV-visible absorption spectrum; (2) recording and use of calibration curves; and (3) recording potentiometric data. Lists of data acquisition programs described are available…
Descriptors: Chemistry, College Science, Computer Oriented Programs, Data Collection