Portmess Exam 1 Fall 2011

Portmess Exam 1 Fall 2011 - CHEM 2210 Test #1 (Fall 2011)...

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CHEM 2210 – Test #1 (Fall 2011) PLEASE ENTER ALL ANSWERS ON YOUR ANSWER SHEET. ONLY YOUR ANSWER SHEET WILL BE GRADED. 1. True or False. C 5 H 10 does not possess a molecule with both an alkene group and a chiral carbon. 2. True or False. A mole of cis-1,3-dimethylcycolhexane gives off more combustion energy than its diastereomer. 3. True or False. Enantiomers have greater physical/chemical differences than diastereomers. 4. What is the dihedral angle of the OH groups in the Newman Projection of (2R, 3R)-2,3-butanediol (looking along the C2-C3 axis) when the Hydrogen atoms are eclipsed? a) 180 b) 120 c) 60 d) 0 e) not listed 5. Comparing the two structures below the most accurate description would be…. a) identical b) enantiomers c) conformational isomers d) diastereomers 6. Assign R or S to the molecules drawn below. 7. a) Including all stereoisomers how many chiral ethers are possible for the molecular formula C 3 H 6 O. b)
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Portmess Exam 1 Fall 2011 - CHEM 2210 Test #1 (Fall 2011)...

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