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 insurance 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 normal items, and molecular modeling and comprise project-based experiments and experiments that experience a organic or future health technological know-how concentration. up to date all through with new and revised experiments, new and revised essays, and revised and elevated options, the 5th version is prepared in keeping with essays and themes of present curiosity.
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Extra resources for A Microscale Approach to Organic Laboratory Techniques (5th Edition)
A Versatile and Inexpensive Pipet Bulb. Journal of Chemical Education, 57 (July 1980): 526. Short (53/4-inch) Long (9-inch) 9 © Cengage Learning 2013 EXPERIMENT 1 ■ Introduction to Microscale Laboratory Figure 8 Disposable Pasteur pipettes. Record the results in your notebook, along with your comments on any deviations from literature values that you may have noticed. See Option A for the density of water and of hexane. Option C, Graduated Pipette Accurately weigh a 3-mL conical vial, with screw cap and Teflon insert, on a balance.
Two procedures are given here for crystallizing sulfanilamide: a semimicroscale procedure using an Erlenmeyer flask and a Hirsch funnel (Experiment 3A) and a microscale procedure with a Craig tube (Experiment 3B). Your instructor may assign both or just one of these procedures. 22 EXPERIMENT 3A ■ Semimicroscale Crystallization—Erlenmeyer Flask and Hirsch Funnel 23 Fluorene © Cengage Learning 2013 In Experiment 3C you will be given an impure sample of the organic compound fluorene (see structure that follows).
When accurate quantities of liquids are required, the best technique is to weigh the reagent that has been delivered from the pipette. L A B ORATOR Y E X E R C IS E 1 Option A, Automatic Pipette Accurately weigh a 3-mL conical vial, with screw cap and Teflon insert, on a balance. 001 g). 500 mL of water into the vial, replace the cap assembly (with the insert arranged Teflon side down), and weigh the vial a second time. Determine the weight of water dispensed. Calculate the density of water from your results.