CHM2526_Final Exam 1999

CHM2526_Final Exam 1999 - 1 CHM 2526 FINAL EXAM Professor:...

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1 CHM 2526 FINAL EXAM Professor: Dr. Louis Barriault Date: December 14, 1999 Time: 3 hours Name: Student #: 1. In silica chromatography, alcohols are usually more polar than ketones. There are certain cases, however, where alcohols are less polar than ketones. For instance, A has a larger R f than B . Briefly explain. (5 pts) OH O A B 2. Using a flowchart, clearly describe a method to separate the following mixtures (chromatography not allowed). (12 pts) Note. A separation is not a purification. NH 2 OH A)
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2 B) OH OH + + NaCl O 3. You are performing a bromination of cis-1,2-diphenylethylene, and you obtain 3 products. Explain the formation of C (about 30% of the mixture) (5 pts). Ph + + Br Br Br Br Ph Br Br Br 2 A B C
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3 4. Benzoyl peroxide was used to initiate the polymerization of methyl methacrylate. A) What is the structure of benzoyl peroxide? (2 pts) B) Give the mechanism for the radical initiation of benzoyl peroxide. (2 pts) C) During the polymerization of acrylamide in water, a solution of ammonium
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This note was uploaded on 01/13/2010 for the course CHM CHM2120 taught by Professor Flynn during the Spring '09 term at University of Ottawa.

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CHM2526_Final Exam 1999 - 1 CHM 2526 FINAL EXAM Professor:...

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