Chromatography separates the components of a mixture. TLC (Thin-Layer Chromatography), Column Chromatography, Gas Chromatography, and High Performance Liquid Chromatography are different variations, but they all rely on a mobile phase (gas, solvent) and a stationary phase. These phases are chosen so that each solute has a high affinity for one and a low affinity for the other and therefore can be separated. TLC plates are prepared by putting a spot of the dissolved solute onto the stationary phase which is on the plate. Then it is developed by standing the plate in a beaker that has a bit of solvent in the bottom. By capillary action, the solvent rises and wets the plate, separating the components of the mixture, which can be compared by how far they travelled along the plate (the Rf value). The relative polarities of the solvent and solutes generally determine Rf.
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
This is the actual book that Dr. Laurie Starkey teaches out of as a professor, and manages to be both clear and yet precise. The book presents a logical, systematic approach to understanding the principles of organic reactivity and the mechanisms of organic reactions.
This book includes all of the concepts typically covered in an organic chemistry textbook, but special emphasis is placed on skills development to support these concepts. This emphasis upon skills development will provide students with a greater opportunity to develop proficiency in the key skills necessary to succeed in organic chemistry.