CHM2211-0001 Fall 2010 Instructor: Dr. Jingdong Ye
Midterm exam I
September 17, 2010
Total number of questions: 25 Total points: 25 Exam duration: 50 min
Note: choose only one correct and best answer for each question!
Tip: work on the easy and fast questions first, come back for harder ones.
1. The IUPAC name of the following compound is:
a. 2,3,5-Trimethyltoluene
b. 1,2,3,5-Tetramethylbenzene
c. 2,4,6-Trimethyltoluene
d. 2,3,5-Trimethyl-1-toluene
e. 1,2,4,6-Tetramethylbenzene
2. The IUPAC name of the following compound is:
a. 2-Phenyl-5-methylhexane
b. (1,4-Dimethylpentyl)benzene
c. 1,4-Dimethylpentylbenzene
d. 2,5-Dimethylpentylbenzene
e. 2-Methyl-5-phenylhexane
3. How many aromatic rings are there in the following compounds?
N
N
N
N
NH
2
O
OHOH
HO
N
N NH
2
N
+
S
OH
(i) (ii)
a. (i) 1; (ii) 1
b. (i) 1; (ii) 2
c. (i) 1; (ii) 3
d. (i) 2; (ii) 2
e. (i) 2; (ii) 3
4. How many electrons in total do the nitrogen atoms contribute to the aromatic systems in the
compounds in Question 3?
a. (i) 3; (ii) 3
b. (i) 3; (ii) 4
1
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