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Ozone: Absorbance of UV Light Ozone is produced. Exposure to a shortwave ultraviolet source causes the ozone to cast a shadow against a fluorescent yellow background.
Atmospheric Chemistry |
Photochemistry
Hydrogen + Chlorine Cannon When a corked test tube containing a mixture of hydrogen and chlorine is struck by light from a burning magnesium ribbon, the resulting explosion propels the cork out of the test tube.
Mosher Amides: Determining the Absolute Stereochemistry of Optically-Active AminesDamian A. Allen, Anthony E. Tomaso, Jr., Owen P. Priest, David F. Hindson, and Jamie L. Hurlburt In this experiment, teams of students are given an optically-pure amine of known structure but unknown stereochemistry. Different teams derivatize samples of the amine with (R) and (S) conformations of Mosher's acid chloride. The resulting diastereomers are analyzed by NMR to determine the absolute configuration of the initial, unknown amine. Allen, Damian A.; Tomaso, Anthony E., Jr.; Priest, Owen P.; Hindson, David F.; Hurlburt, Jamie L. J. Chem. Educ.2008, 85, 698.
Amides |
Chirality / Optical Activity |
Chromatography |
Diastereomers |
Microscale Lab |
NMR Spectroscopy |
Stereochemistry
Optical Properties of Fluorescent Mixtures: Comparing Quantum Dots to Organic DyesBenjamin M. Hutchins, Thomas T. Morgan, Miné G. Ucak-Astarlioglu, and Mary Elizabeth Williams Visually observed fluorescent colors of quantum dots in conjunction with spectroscopic data show students the additive emission of such mixtures; while some appear to emit white light, their fluorescence peaks remain spectroscopically resolved. Hutchins, Benjamin M.; Morgan, Thomas T.; Ucak-Astarlioglu, Miné G.; Williams, Mary Elizabeth. J. Chem. Educ.2007, 84, 1301.
Dyes / Pigments |
Fluorescence Spectroscopy |
Materials Science |
Nanotechnology |
Photochemistry |
Qualitative Analysis |
Spectroscopy |
UV-Vis Spectroscopy
Photochemical Dimerization of Dibenzylideneacetone. A Convenient Exercise in [2+2] Cycloaddition Using Chemical Ionization Mass SpectrometryG. Nageswara Rao, Chelli Janardhana, V. Ramanathan, T. Rajesh, and P. Harish Kumar Presents a laboratory procedure for the photochemical dimerization of dibenzylideneacetone, a dienone. The dimerization is confirmed by chemical ionization mass spectrometry, and other spectroscopic techniques are used to establish the structure of the product. Rao, G. Nageswara; Janardhana, Chelli; Ramanathan, V.; Rajesh, T.; Kumar, P. Harish. J. Chem. Educ.2006, 83, 1667.
Cannon (GCMP)David M. Whisnant H2 and Cl2 cannon: this is a resource in the collection "General Chemistry Multimedia Problems". In this problem we observe the reaction of hydrogen and chlorine and explore some related reactions. The reaction involves a radical mechanism initiated by light. General Chemistry Multimedia Problems ask students questions about experiments they see presented using videos and images. The questions asked apply concepts from different parts of an introductory course, encouraging students to decompartmentalize the material.
Photochemistry
Cyclopamine and Cancer PreventionRobert Hetue A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Amines / Ammonium Compounds |
Amides
Organic Nitrogen CompoundsEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
