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Blue Bottle, Red and Blue Bottle Color changes are caused by reactions of oxygen in the air with chemicals in a solution. The colors fade over time, but can be regenerated by shaking the flask containing the solution.
Kinetics |
Mechanisms of Reactions |
Oxidation / Reduction
Induction by Iron(II) of the Oxidation of Iodide by Dichromate Acidic aqueous solutions containing dichromate and iodide ions are mixed with no reaction. The addition of a solution of iron(II) ion induces the rapid formation of brown triiodide ion.
Catalysis |
Kinetics |
Mechanisms of Reactions |
Oxidation / Reduction
Chirality A series of chiral and achiral objects, the interaction of polarized light with organic molecules, the assignment of R- and S- configuration, Fisher projections, and a stereospecific reaction are demonstrated.
The Synthesis of N-Benzyl-2-azanorbornene via Aqueous Hetero Diels–Alder ReactionXavier Sauvage and Lionel Delaude Characterization of the product of this organic synthesis through IR and NMR data analysis provides valuable material to familiarize students with different types of protonproton coupling patterns and their typical ranges, serves to illustrate the concepts of green chemistry and atom efficiency, and can be used to exemplify structural analysis and computational studies. Sauvage, Xavier; Delaude, Lionel. J. Chem. Educ.2008, 85, 1538.
Alkenes |
Aqueous Solution Chemistry |
Conformational Analysis |
Green Chemistry |
IR Spectroscopy |
Molecular Modeling |
NMR Spectroscopy |
Stereochemistry |
Synthesis
The Same and Not the Same: Chirality, Topicity, and Memory of ChiralityWolfgang H. Kramer and Axel G. Griesbeck Describes a simple molecular approach that aids students in learning stereochemical terms, definitions, and concepts, particularly when chemical structures are drawn in two dimensions. Kramer, Wolfgang H.; Griesbeck, Axel G. J. Chem. Educ.2008, 85, 701.
Chirality / Optical Activity |
Stereochemistry
4-Dimethylaminopyridine or Acid-Catalyzed Syntheses of Esters: A ComparisonAnnemieke W. C. van den Berg and Ulf Hanefeld Students compare acid-catalyzed ester synthesis and the 4-dimethylaminopyridine-catalyzed reaction. Based on the outcome of the experiments, students discuss the different reaction mechanisms and reason why different products are formed. van den Berg, Annemieke W. C.; Hanefeld, Ulf. J. Chem. Educ.2006, 83, 292.
Interactive Molecular OrbitalsWilliam F. Coleman The majority of Introductory Chemistry texts provide students with an adequate introduction to the visual aspects of the molecular orbital model for homonuclear diatomic molecules. The treatment of heteronuclear diatomic and polyatomic molecules is less uniform. Heteronuclear diatomics, when mentioned, are invariably treated as being derived from homonuclear diatomics. While the atomic orbital energy level differences in heteronuclear diatomics is sometimes pictured, the consequences of those differences for the resultant molecular orbitals are rarely discussed. The discussion of polyatomic molecular orbitals in these texts is limited to showing that parallel p-orbitals produce delocalized pi molecular orbitals. The molecules typically mentioned in this context are benzene, nitrate ion and carbonate ion. However, It is rarely pointed out that the six p-orbitals in benzene would form 6 pi molecular orbitals, and that only one of these orbitals would look like the picture in the text.These interactive modules are designed to clarify this subject.
MO Theory
Molecular OrbitalsEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
MO Theory |
Magnetic Properties
Delocalized ElectronsEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
