Practice_Exam_4 - 5.12 PRACTICE EXAM #4 PAGE 1 Short...

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5.12 PRACTICE EXAM #4 PAGE 1 Short questions 1-8; 3 points each) 1. Estimate the pK a of the proton indicated. H H A. 50 B. 30 C. 15 D. 5 2. Which of the following compounds is likely to adopt a planar conformation? H 2 A. B. C. N D. 3. Which of the following is the most likely to loose water upon protonation with HCl? A. OH B. OH C. OH D. OH 4. What would be the major organic product of the reaction scheme shown? O OEt 1. Excess MeMgBr 2. pH7 OH O OMe H O O Me Me Me D A B C
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PAGE 2 5. Which of the following statements about benzene is INCORRECT? A. It undergoes electrophilic substitution reactions rather than electrophilic addition reactions. B. It is less reactive than hexatriene (CH 2 =CH-CH=CH-CH=CH 2 ) C. The carbon-carbon bond lengths are all the same. D. The carbon-carbon bond lengths are longer than ethane. 6. (3 points) Which of the following is the best description of a "catalyst"? Catalysts alter the kinetics of a reaction by:
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This note was uploaded on 01/30/2011 for the course CHEM 2OA3 taught by Professor Stover during the Spring '10 term at McMaster University.

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Practice_Exam_4 - 5.12 PRACTICE EXAM #4 PAGE 1 Short...

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