CHEM 2324 Exam IV
Name:
UTEP ID:
1.-5. Match each IR spectrum listing on the left to a compound on the right
1.
2.
3.
4.
5.
2900 (s), 1700 (s)
djfkajsd
dkjfkajs
kjdflkajd
djfakjd
a.
6. How many (R) chiral centers are there in the following compound?
a. 1
b. 2
c. 3
d. 4
e. not a.-d.
7. Is the following compound?
a. chiral
b. meso
c. achiral but not meso
d. not a.-d.
8. What is the relation between the following two compounds?
a. equivalent b. enatiomers c. diastereomers
d. constitutional isomers
e. not a.-d.
9. Given a a:b mixture of (+)/-(-) enantiomers and the optical rotation of pure (-)-enantiomer is
x°, what is the optical rotation of this mixture? Or Given the optical rotation of a mixture of
enantiomers is x° and the rotation of pure (-)-enantiomer is y°, what is the percent (or ration)
of each enantiomer? Or given the optical rotation of a a:b mixture of enantiomers is x°, what
is the optical rotation of the pure (-)-enantiomer?
10. The following compound is?
a. d
b. D
c. l
d. L
e. not a.-d.
11. The following compounds has how many stereoisomers in its family, or has how many
stereoiosmers, or has how many enantiomers, or has how many diastereomers?
a. 1
b. 2
c. jdfkajd
e. not a.-d.
12. The following compounds have the same physical properties
a. true
b. false
13. The following compounds have the same biological properties
a. true
c. false
14.-18. Match each compound on the left to the number of 13C NMR signals that it has. Answers
may be repeated
14. ajsdfkaj
15. kajsdfka
16. jdfjaksdjfka
17. jkajsdkfajsk
18. jkjdskfajdsj
a. 3
b. 4
c. 5
d. 6
e. not a.-d.
19.-22. Match each pair of hydrogens on the left (referring the above compound) to a topicity
relationship on the right. Answers may be repeated.
19. H1, H2
20. H2, H3
21. H3, H4
22. H5, H6
23. H7,H10
a. equivalent
b. enantiotopic
c. diastereotopic
d. constitutional heterotopic
e. not a.-d.
24-28. Match each 1H NMR spectrum on the left to a compound on the right.
24. 3.0 (1H, s), 2.0 (2, d), 1.0 (3, t)
25. jkfjakdsj
26. jdskfas
27. jakjdka
28. jdskfaks
a. dksjdfkajskd
b. djfkjaskd
c. jdskfak
d. jdkfa
e. jdkajsd