exam1spring99 - Chemistry 51 Exam 1 Spring 1999 This exam...

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Exam 1 Spring 1999 Chemistry 51 This exam lasts 50 minutes. No texts, notes, etc. may be used. Calculators may be used but not passed between students. Only the answer sheet will be collected at the end of the exam. This question sheet will not be collected. All answers must appear on the answer sheet. 1. (5pts) Using the partial Fischer projection provided for you on the answer sheet draw the structure of (2R,3S) 2-bromo-3-chlorobutanedial. 2. (5 pts) Draw a compound having formula C 3 H 8 O which is weakly basic but not weakly (or strongly) acidic. 3. (6 pts) Using the partial Newman projection diagrams provided for you draw a.) the most stable and b.) the least stable staggered conformation of meso 2,3,4,5 - tetramethyl hexane. Cl For each of the following equilibria indicate by a check mark if the equilibrium constant, K, is much less than one, about one, or much greater than one (5 pts. each) CH(CH 3 ) 2 CH(CH 3 ) 2 most stable least stable 4. CH 3 CH 2 OH + NH 2 - CH 3 CH 2 O - + NH 3 5. (CH 3 ) 3 NH + + CH 3 OCH 3 (CH 3 ) 3 N + CH 3 OCH 3 H +
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This note was uploaded on 09/24/2009 for the course CHEMISTRY 239 taught by Professor Higgins during the Spring '09 term at SUNY Stony Brook.

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exam1spring99 - Chemistry 51 Exam 1 Spring 1999 This exam...

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