S2015exam2.docx

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Chemistry 432, Midterm Exam 2 Instructor: Gustafson Spring 2015 Name:_______________________________ Be prepared to show ID upon request. **No cellular phones or calculators are allowed during the test** Before you start the exam, make sure that you have 12 problems!! There are 180 points available, but the exam is only out of 150. You will receive all points you earn!!! For example if you earn 155/180 points, your grade will go down as 155/150. My TA this semester is (please circle): Lee Wang Tim Montgomery Michael Kelly I do not have a TA this semester.
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My student I.D. (red I.D.) number is: For graders only: Problem: #1_________/18p #2_________/18p #3_________/18p #4_________/18p #5_________/18p #6_________/ 18p #7_________/18p #8_________/ 18p #9_________/18p #10________/18p Total:________/180p Max total:_______/150p Good Luck!!! 1) Predict the products formed in the following reactions (2 per part, 14 Pts total )
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2)
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3A) Diazomethane is a very reactive and sometimes dangerous (explosive) chemical. Diazocyclopentadiene is quite stable. Please explain this dichotomy (remember a picture (resonance structure) can be worth 1000 words! (9 Pts) 3b) Benzyne is a highly strained and reactive intermediate. Is Benzyne aromatic?
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