SMU CHEM 3117 - reac 712 (2 pages)

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reac 712



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reac 712

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School:
Southern Methodist University
Course:
Chem 3117 - Organic Chemistry Lab
Organic Chemistry Lab Documents

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Kristen Schramm Alan Humason CHEM 3117 L 04 10 29 14 REAC 712 Dehydrating Cyclohexanol Post Lab Questions 1 The percent yield was found to be 85 5 The process is shown on the calculations page 2 Yes my product caused a color change This was because it cyclohexene is what the product has changed to so it is the same color change that cyclohexene showed 3 No it did not cause a color change with the bromine test because again it has been changed to cyclohexene and it does not experience a color change either 4 Did not have to do 5 a It was found to be 1 445 b My product refractive index is very close to the true value of cyclohexene but it still differs slightly This fact can say that although the product is mostly cyclohexene from this method it is not completely pure c My refractive index does slightly differ than the literary value The most likely contaminant in my product is probably water due to the process and overall chemical equation This also makes sense if you look at the refractive index of water which is 1 3329 and my product is slightly lower than it should be so the waters value lowered it 6 The major product would be 1 methylcyclohexene 7 The mechanism is outline on the calculations sheet I would predict that this reaction would take place faster than the one we did Additional Question 1 It favors the desired product due to the very different boiling points Because the boiling point of cyclohexanol is much lower than the cyclohexene it evaperats and then becomes trapped in the hickman device giving us the desired product



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