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2002 key - Name CHEMISTRY 3311 Fall 2002 Professor Walba...

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Name: Key -1- CHEMISTRY 3311, Fall 2002 Professor Walba First Hour Exam, September 26 scores: 1) 20 2) 20 3) 20 4) 20 5) 20 100 PLEASE read the questions carefully! This is a closed-book exam. The use of notes, models, calculators, and other paraphernalia will not be allowed during the exam. Please put all your answers on the test. Use the backs of the pages for scratch. H He Li Be B C N O F Na Mg Al Si P S Ne Cl Ar Br I 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 35 53 1A 2A 3A 4A 5A 6A 7A 8A Partial Periodic Table
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Name: Key -2- 1 (20 pts) a) Describe the relationship between each of the following pairs of structures using one of the following pairwise descriptors: homomers; constitutional isomers; stereoisomers. F F F F F F F F F F F F Br Br b) Each of the following pairs of compounds can in principle act as a Bronsted acid (i.e. can donate a proton to a base). For each pair, circle the stronger acid. NH 3 CH 4 NH 2 OH NH 3 OH 2 HBr HF OH OH F F CH 3 H 3 C iii c) In ONE WORD, give a reason for your answer in part 1.b.iii. Electronegativity homomers stereoisomers constitutional isomers homomers
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