By Donald L. Pavia, Gary M. Lampman, George S. Kriz, Randall G. Engel
From biofuels, eco-friendly chemistry, and nanotechnology, this confirmed laboratory textbook offers the up to date assurance scholars want of their coursework and destiny careers. The book's experiments, all designed to make use of microscale glassware and gear, conceal conventional natural reactions and syntheses, the isolation of common items, and molecular modeling and contain project-based experiments and experiments that experience a organic or wellbeing and fitness technology concentration. up-to-date all through with new and revised experiments, new and revised essays, and revised and multiplied ideas, the 5th variation is equipped in keeping with essays and themes of present curiosity.
Read or Download A Microscale Approach to Organic Laboratory Techniques (5th Edition) PDF
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Extra info for A Microscale Approach to Organic Laboratory Techniques (5th Edition)
Since the hydroxyl group is positioned on the outer surface of the SAM, the outer surface takes on the properties of the head group and is also hydrophilic. The first step in this experiment is to use a butane torch to clean the gold slide (glass plate coated with gold). The purpose of this step is to remove hydrocarbons from the air that have deposited on the gold surface over time. If the slide is dipped into water immediately after being cleaned, the gold surface should be coated with water.
Nanotechnology Demonstration 6. Why do the letters stay wet while the rest of the surface is dry? 7. Immediately after flame-cleaning the gold surface, water will adhere to the surface when the slide is dipped in water. If this water is cleaned off the slide and the slide is allowed to sit in the air for several minutes, water will no longer adhere to the surface when the slide is rinsed in water. Explain why. 8. A hydroxyl group on the end of the molecule makes the surface of the gold hydrophilic.
The literature melting point for pure sulfanilamide is 163–164°C. At the option of the instructor, turn in your crystallized material in a properly labeled container. Comments on the Crystallization Procedure 1. Do not heat the crude sulfanilamide until you have added some solvent. Otherwise, the solid may melt and possibly form an oil, which may not crystallize easily. 2. When you are dissolving the solid in hot solvent, the solvent should be added in small portions with swirling and heating. 25 mL), which is appropriate for this experiment.