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Distillation Here we consider distillation including simple distillation, distillation at reduced pressure and using a rotary evaporator.
Laboratory Equipment / Apparatus |
Separation Science
Separating and Purifying Laboratory processes frequently used to separate mixtures or purify substances including centrifuging, chromatography, distillation, extraction, filtration, and recrystallization are demonstrated.
Laboratory Equipment / Apparatus |
Separation Science
Scattering and Absorption of Light The effects of passing light through a colloidal suspension of milk in water and through a solution of copper sulfate are shown.
Designing and Conducting a Purification Scheme as an Organic Chemistry Laboratory PracticalKate J. Graham, Brian J. Johnson, T. Nicholas Jones, Edward J. McIntee, and Chris P. Schaller Describes an open-ended laboratory practical that challenges students to evaluate when different purification techniques are appropriate. Graham, Kate J.; Johnson, Brian J.; Jones, T. Nicholas; McIntee, Edward J.; Schaller, Chris P. J. Chem. Educ.2008, 85, 1644.
IR Spectroscopy |
Microscale Lab |
Molecular Properties / Structure |
NMR Spectroscopy |
Physical Properties |
Separation Science
Isolation of Three Components from Spearmint Oil: An Exercise in Column and Thin-Layer ChromatographyDon R. Davies and Todd M. Johnson In this exercise, the three major components of spearmint oil, (+)-limonene, L-(-)-carvone, and (1R,2R,4R)-dihydrocarveol, are separated by silica gel column chromatography. The separation is monitored by thin-layer chromatography, and IR analysis is employed to verify the identity of the separated components. Davies, Don R.; Johnson, Todd M. J. Chem. Educ.2007, 84, 318.
DistillationEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Physical Properties |
Separation Science
Boiling and Freezing PointsEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Physical Properties
Floating Squares (GCMP)David M. Whisnant Floating Squares: this is a resource in the collection "General Chemistry Multimedia Problems". In this problem we will coat a piece of notecard with graphite (from pencil lead). We then will float the piece in two beakers containing water and a second solvent. 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.
