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CHEM301 F10 E2akey

CHEM301 F10 E2akey - CHEM 301 EXAM 2A 28 October 2010 Dr...

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CHEM 301 EXAM 2A NAME ______ KEY ________________ 28 October 2010 Dr. Suzanne Ruder Student ID: _________________________ Group # On my honor, I have neither given nor received aid on this exam______________________ signature INSTRUCTIONS: There are six pages to this exam. Read all questions carefully. If you have a question, raise your hand and someone will assist you. Paper other than the exam paper and molecular models are not permitted. Do your own work, and cover your answers. Part 1: Multiple Choice (4 pts each). Use the form provided to scratch off your answer. If your answer is correct there will be a star; if your answer is not correct, scratch off your second choice to receive partial credit for your answer. Scratch off questions 1-13 on your form. 1) Which cation would be the most stable? A B C D 2) Which is the best nucleophile? CH 3 CO 2 Ө H 3 N CH 3 O Ө CH 3 NHΘ A B C D 3) Indicate which H would be most readily abstracted by a bromine radical? Ha Hb Hc H H H Hd 4) Why is the hydrogen listed above most readily abstracted by a bromine radical? A) It is less sterically hindered. B) It results in a tertiary cation. C) It forms the highest energy intermediate. D) The resulting radical is resonance stabilized. A) Ha B) Hb C) Hc D) Hd
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