Problem Set 1

Problem Set 1 - Problem Set 1 CHEM 282 Page 1 The questions...

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Problem Set 1 CHEM 282 Page 1 The questions below are part of a previous Chem 281 final exam. Go through this problem set in order to refresh the organic chemistry I material; these questions will not be discussed in tutorial. If you need help with understanding some of them, bring them to the posted office hours. 1. Clearly indicate the right answer for the following multiple choice and short answer questions. A. Which of the following statements about ethene, C 2 H 4 , is incorrect? (1.5 mark) The H-C-H bond angles are approximately 109.5 o All of the hydrogen atoms are in the same plane. There is a total of five sigma bonds. The carbon atoms are sp 2 hybridized. The H-C-H bond angles are approximately 120 o . B. Which of the following S N 2 reactions is the fastest? (1.5 mark) CH 3 CH 2 CH 2 CH 2 Br + HO CH 3 CH 2 CH 2 CH 2 OH + Br CH 3 CH 2 CH 2 CH 2 Br + H 2 O CH 3 CH 2 CH 2 CH 2 OH + HBr CH 3 CH 2 CHBrCH 3 + HO CH 3 CH 2 CHOHCH 3 + Br CH 3 CH 2 CHBrCH 3 + H 2 O CH 3 CH 2 CHOHCH 3 + HBr C. Provide the major organic product in the reaction below. Do not forget to show stereochemistry! (2 marks) O CH 3 HBr D. How many signals would you expect to see in the
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This note was uploaded on 09/25/2011 for the course CHEM 282 taught by Professor Nabylmerbouh during the Spring '10 term at Simon Fraser.

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Problem Set 1 - Problem Set 1 CHEM 282 Page 1 The questions...

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