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Question 2 (1 point) Which of the following Lewis structures is (are) correct? H H H H N O = O N N N O H N=N H N C CF H N O I and IV O II and III O III O II and IV O I and II Question 3 (1 point) Which pairs of molecules are constitutional isomers? O II, III O I, II O I, II and IV O III, IV O I, IV Question 5 (1 point) what is the IUPAC name of the following compound? O 1-ethyl-3
Question 2 (1 point)
Which of the following Lewis structures is (are) correct?
H H H H
N O = O N N N O H N=N H N C CF
H N
O I and IV
O II and III
O III
O II and IV
O I and II
Question 3 (1 point)
Which pairs of molecules are constitutional isomers?
O II, III
O I, II
O I, II and IV
O III, IV
O I, IV
Question 5 (1 point) what is the IUPAC name of the following compound?
O 1-ethyl-3.4-dimethylcyclohexene
O 1,6-dimethyl-3-ethylcyclohexene
O 3-methyl-2,5-ethylene-3-heptene
O 6-ethyl-2,3-dirnethylcyclohexene
O 3-ethyl-1,6-dimethylcyclohexene
Question 6
Which of the pair are the same compounds?
O II and III
O I and IV
O I, II and III
O I and II
Question 7
Which of the following alkenes show cis-trans-isomerism
i. 2,5 dimethyl-3hexene
ii. 2,4 - dimethyl-2-Pentene
iii. 2,4- dimethyl-1-Pentene
iv. 4,5-dimethyl – 2- hexane
O II and IV
O III and IV
O II and III
O I and IV
O I and II
Question 11
Which of the molecules are constitutional isomers.
O I and II
O I, II and III
O I, II and IV
O I, II and IV
O I, IV, and V
Question 13 (1 point) What orbitals are involved in forming the indicated a-bonds in the following compound?
a) I: sp2-sp2 , II: sp-sp
b) I: sp3-sp3 , II= sp-s
c) I: sp3-sp , II: sp-s
d) I:sp2-sp , sp-s
e) I:sp-sp II: sp-sp3
Question 15 (1 point) Consider the ionic bond that forms between Sodium (Na) and Chloride (CI). Which of the following represents the electron configuration of the two atoms?
O Na+ (1s22s22p6) + Cl- (1 s22s22p63s23p6)
O Na (1s22s22p630) + (1s22s22p63s23p4)
O None of the answers provided are correct
O All of the answers provided are correct
O Na+ (1s2s22p63s2 2s22p63s23p6)
Question 16
How many cis-trans isomers are possible for the structure below?
a) 4
b) 0
c) 2
d) 8
e) 16
Question 20
What is the IUPAC name of the following compound?
a) 6-methyl-1-heptyne
b) 6-methyl-1-hexyne
c) 2-methyl-6-hexyne
d) 2-methyl-6-heptyne
e) 5-methyl-1-hexyne
Question 21 (1 point)
Provide the systematic IUPAC name for the molecule below:
(CH3)3CCH2C=CCH2CH(CH3)CH2CH3
a) 2- ethyl -7, 7-dimethyl-4-octyne
b) 1,1,6-trimethyl-3-octyne
c) 2,2,7- trimethyl-4-nonyne
d) 7-ethyl-2,2 –trimethyl- 4 - octyne
e) 6-undecyne
Question 23 (1 point)
The line angle formula (shown with stereochemistry) corresponds to which of the following conformers (looking down C2-C3 bond)?
a) D
b) B
c) A
d) C
Question 25
Which of the following are pairs of resonance contributing structure?
a) I , IV
b) I, II, IV
c) II, III, IV
d) III, IV
e) I, II
Question 27
Which of the following are constitutional isomers of cis-1,3-dimethylcyclobutane?
a) II, III, V
b) I and III
c) II, III, IV
d) II, IV, V
Question 28
The correct names of the following (cyclo) alkanes are (the names are listed in order from 1 to 5):
O 1,3-diethylcyclobulano, 2-methyl-1-butyl-cyclopropano, 1,3,4 -trimethylcycloPentane, 1- isobuty1-4-propyl-cycloheptane, 1-ethyl-3-isopropyl -5- methylcyclohexane
O 1,3-diethylcyclobutane, 1-cyclopropy1-3-mothylbutane, 1,3,4- trimethylcyclopentane, 1-sec-buty1-4-propyl-cycloheptane, 1-ethyl-3-isopropyl-5-methylcyclohexane
0 1,3-chethylcyclobutane, 1-cyclopropyl-3-methylbutane, 1,3,4-trimethylcyclopentane, 1-isobuty1- 4-propyl-cycloheptane, 1-ethyl-3-methyl-5-isopropylcyclohexane
O 1,3-diethylcyclobutane, 1-cyclopropy1-3-methylbutane, 1,3,4-tnmethylcyclopentane, 1-isobuty1- 4-propyl-cycloheptane, 1-ethyl-3-isopropyl-5-methylcyclohexane
O 1,3-diethylcyclobutane, 1-cyclopropyl-3-methylbutane, 1,3,4-tetramethylcyclopentane. 1- isobury1-4-propyl-cycloheptane, 1-ethyl-3-isopropyl-5-methylcyclohexane
Expert Solution
Q2. D
Q3. A
Q5 E
Q6 C
Q7 D
Q11 D
Q13 C
Q15 A
Q16 C
Q20 A
Q21 C
Q23 B
Q25 E
Q27 D
Q28 E
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