140C_midterm1_v2s_fall_2010

140C_midterm1_v2s_fall_2010 - Chemistry 140C 1st Midterm...

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Chemistry 140C 1 st Midterm Exam Version 2 Fall 2010 Thu, Oct 14, 2009 2:05 pm – 3:05 pm This exam accounts for 25% of the final grade. Mark your final answer clearly. Completely erase irrelevant information! Exams written in pencil will not be regraded. Additional pages are at the end for your convenience. You can use them to sketch formulae, mechanisms, etc. and for answers. Indicate if your final answer should be found on the additional pages at the end of the exam! Write your name and student ID on every page and sign every page. Good Luck! S O L U T I O N S Your Name (Please print): ______________________________________ Your Student ID#: ______________________________________ Question 1: …………………. ./15 Question 2: …………………. ./30 Question 3: …………………. ./25 Question 4: …………………. ./25 Question 5: …………………. ./55 Total points: …………………./150
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Name: ID: Signature: 140C - 1 st Midterm exam, Version 2 10-14-2010 2 Question 1: (a) Acryl bromide 2 is a much weaker base than methyl acrylate 1 . Explain, using resonance structures. (10 points) 12 OCH 3 O Br O OCH 3 O OCH 3 OH + O + CH 3 OH H + Resonance stabilization of the positive charge in the ester (not possible in the bromide).
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This note was uploaded on 02/01/2012 for the course CHEMISTRY 140C taught by Professor Hermann during the Fall '11 term at UCSD.

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140C_midterm1_v2s_fall_2010 - Chemistry 140C 1st Midterm...

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