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Mt2au08blank Copy - Callam Chemistry 251 Autumn 2008 Midterm#2 200 points Name(PRINT I have neither given or received aid on this exam(SIGN Place

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Callam Chemistry 251 Autumn 2008 Page 1/14 Midterm #2 200 points Name (PRINT)_____________________________ I have neither given or received aid on this exam (SIGN)______________________________ Place an X in the box to the left of your recitation section. Failure to mark your correct recitation section will result in –5 points from your exam total. T 1:30 p.m.-2:18 p.m. Kamala Kunchithapatham R 1:30 p.m.-2:18 p.m. Kamala Kunchithapatham T 1:30 p.m.-2:18 p.m. Will Henderson R 1:30 p.m.-2:18 p.m. Will Henderson T 1:30 p.m.-2:18 p.m. Amanda Kutney R 1:30 p.m.-2:18 p.m. Amanda Kutney T 2:30 p.m.-3:18 p.m. Kamala Kunchithapatham R 2:30 p.m.-3:18 p.m Kamala Kunchithapatham T 2:30 p.m.-3:18 p.m. Will Henderson R 2:30 p.m.-3:18 p.m. Will Henderson T 2:30 p.m.-3:18 p.m Amanda Kutney R 2:30 p.m.-3:18 p.m. Amanda Kutney Part Points Score 1 15 2 20 3 13 4 40 5 22 6 14 7 16 8 60 EC 10 TOTAL 200 Please read all of the directions for each section of the exam carefully. There are 14 pages including this cover page for Midterm #2, please check to make sure you have all of the pages. Make sure your answers are clear. Any structures or answers that are unclear or ambiguous are considered wrong. If you place an X in the lower left corner of page 10 you will receive +3 points. o GOOD LUCK! Do your best
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Callam Chemistry 251 Autumn 2008 Page 2/14 Part 1. Ranking . There will be no partial credit on Part 1 of the exam. a) Rank the following alkyl halides in order of increasing SN 2 reactivity. (1 – least reactive, 3 – most reactive) (3 points) Cl Cl Br b) Rank the following alkyl halides in order of increasing SN 1 reactivity. (1 – least reactive, 3 – most reactive) (3 points) Br Br Br H 3 CO O 2 N c) Rank the following alkenes in order of increasing stability. (1 – least stable, 3 – most stable) (3 points) d) Rank the following nucleophiles in order of increasing strength in polar aprotic solvent. (1 – weakest nucleophile, 3 - strongest nucleophile) (3 points) O OLi NHLi OLi e) Rank the following in order of leaving group ability. (1 – worst leaving group, 3 - best leaving group) (3 points) O S O CH 3 O O S O CF 3 O O O
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This note was uploaded on 03/22/2011 for the course CHEM 251 taught by Professor Stambuli during the Spring '08 term at Ohio State.

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Mt2au08blank Copy - Callam Chemistry 251 Autumn 2008 Midterm#2 200 points Name(PRINT I have neither given or received aid on this exam(SIGN Place

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