Cyclohexanol to Cyclohexene

Experiment 5: Preparation of Cyclohexene- Acid Catalyzed Elimination of Cyclohexanol bollock State University Organic Chemistry Lab 231 (Sec. 5) Dr. Bock/Daniel milling machine Tiffany Raber 5 November 2012 Purpose: To prepare an alkene by an voidance chemical reply of an alcohol in the presence of sulfuric acetous as a catalyst to produce a successful pay off and desired results for the purity of the alkene. entrée: The dehydration of an alcohol much(prenominal) as cyclohexanol is a useful technique for generating alkenes. The success of this reaction relies on a dehydration, such as the presence of a strong acid (sulfuric acid). Because this reaction is reversible, a fractional distillation is necessary to produce cyclohexene, piddle, and some impurities and a simple distillation is followed to further purify the product. [pic ] (Fig. 1- Cyclohexanol dehydrated by sulfuric acid to produce cyclohexene) Procedure: 1. Mix cinque mL of Cyclohexanol and 2.5 mL of 9M sulfuric acid in a 25 mL flask. 2. Construct a fractional distillation apparatus (unpacked) part stirring the mixture and begin heating. a. passion slow b.

Do non heat over 90-100 degrees Celcius c. Ice water bath for distillation if desired 3. The distillate will be cloudy. Add anhydrous green carbonate in fine amounts until it is no longer cloudy. conveyance to a 1 0 to 25 mL round do-nothing flask. ! 4. Construct a simple distillation making current all tools are dry and clean. The flask should be pre-weighed. Drying thermionic valve must be attached to a vacuum adapter by a hose. a. Drying tube- clear, tensile tube filled with drying agent 5. later on distillation, remember the mass of the distillate and calculate the percent yield. 6. Lastly, personate 10 drops of .1M bromine solution in...If you want to get a rise essay, order it on our website: BestEssayCheap.com

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