Exam 2 - CHEM 2370 Page 1 of 14 CHEM 2370 Exam 2 (100...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
CHEM 2370 Exam 2 (100 points) Name _________________________ Dr. S. A. Dandekar March 27 th , 2002 Select the best answer from the given choices for ANY 30 of questions 1-32. 1. cis -1,3-Dibromocyclohexane is represented by structure(s): a. I b. II c. III d. II and III e. I and II 2. The most stable conformation of 1,2-diphenylethane is: a. I b. II c. III d. IV e. V 3. The most stable conformation of trans -1- tert -butyl-3-methylcyclohexane is the one in which: a. the tert -butyl group is axial and the methyl group is equatorial. b. the methyl group is axial and the tert -butyl group is equatorial. c. both groups are axial. d. both groups are equatorial. e. the twist boat conformation is adopted. 4. Which isomer would have the largest heat of combustion? a. Propylcyclopropane b. Ethylcyclobutane c. Methylcyclopentane d. Cyclohexane e. Since they are all isomers, all would have the same heat of combustion. Page 1 of 14 CHEM 2370 1/19/2007 http://www.chem.unt.edu/CHEM2370/2370ex2.htm
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
--Page 2 5. Which of these C 10 H 18 isomers is predicted to be the most stable? a. I b. II c. III d. IV e. V 6. Which molecule has a plane of symmetry? a. I b. II c. III d. More than one of these e. None of these 7. Chiral molecules are represented by: a. I, II, III, IV and V b. I, II, III and IV c. I and II d. III and IV e. IV alone 8. Which of the following is true about any (R)- enantiomer? a. It is dextrorotatory. b. It is levorotatory. c. It is an equal mixture of (+) and (-). d. It is the mirror image of the (S)- enantiomer. e. (R) indicates a racemic mixture. Page 2 of 14 CHEM 2370 1/19/2007 http://www.chem.unt.edu/CHEM2370/2370ex2.htm
Background image of page 2
Page 3 of 14 CHEM 2370 1/19/2007 http://www.chem.unt.edu/CHEM2370/2370ex2.htm
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
--Page 3 9. How many chiral stereoisomers can be drawn for CH 3 CHClCHBrCH 3 ? a. 1
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 14

Exam 2 - CHEM 2370 Page 1 of 14 CHEM 2370 Exam 2 (100...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online