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Chapter 10: Reactions of Alcohols, Amine, Ethers, and Epoxides
Quizzes
Quiz 1
Quiz 1
This activity contains 12 questions.
Name CH
3
CH
2
CH
2
CH
2
OCH
3
.
butoxymethane
methoxybutane
1-methyloxybutane
methyl propyl ether
1-methoxybutane
Which ether contains an isopropoxy group?
isopropyl ethyl ether
ethyl methyl ether
ethyl cyclobutyl ether
ethyl propyl ether
propyl cyclobutyl ether
Which of the following anions is the strongest base?
bromide ion
iodide ion
hydroxide ion
fluoride ion
chloride ion
Why do alcohols undergo nucleophilic substitution reactions with hydrogen halides but
not
with halide salts?
Halide salts are strongly bonded ion pairs, and the halide ion is less available to act as a nucleophile.
The acid protonates the OH group and changes the leaving group from a hydroxide radical to a water molecule.
The acid protonates the OH group and changes the leaving group from a hydroxide ion to a water molecule.
Substitutions always need to be carried out at low pH values.
The acid protonates the OH group and changes the leaving group from a hydroxide ion to a hydroxyl radical.
Which of the following is a true statement?
Only primary alcohols react with hydrogen halides, and they react by an S
N
2 pathway.
All types of alcohols react with hydrogen halides, and the mechanism depends on the structure of the alcohol.
All types of alcohols react with hydrogen halides by way of an S
N
2 reaction.
All types of alcohols react with hydrogen halides by way of an S
N
1 reaction.
Only tertiary alcohols react with hydrogen halides, and they react by an S
N
1 pathway.
Which of the following is the poorest leaving group?
TsO
-
Br
-
H
2
O
I
-
CH
3
O
-
What is the major product obtained from the acid-catalyzed dehydration of 1-methylcyclohexanol?
methylcyclohexane
2-methylcyclohexene
3-methylcyclohexene
1-methylcyclohexene
methylenecyclohexane
Which of the following describes the reaction coordinate diagram for the dehydration of a protonated secondary alcohol?
no intermediate, one transition state
one intermediate, three transition states
no intermediate, two transition states
one intermediate, one transition state
one intermediate, two transition states
What products are obtained from the reaction of benzyl phenyl ether with one equivalent of HI?
Ph-I and Ph-OCH
2
OH
Ph-OH and Ph-OCH
2
I
Ph-I and Ph-CH
2
OH
Ph-OH and Ph-CH
2
I
Ph-I and Ph-CH
2
I
Which of the following ethers would react most rapidly with HBr to give a mixture of an alcohol and an alkyl halide?
diethyl ether
methyl
tert
-butyl ether
dimethyl ether
diisopropyl ether
methyl isopropyl ether
What product is formed when 1,2-dimethylcyclohexanol undergoes acid-catalyzed dehydration?
1,6-dimethylcyclohexene
2,3-dimethylcyclohexene
1,3-dimethylcyclohexene
2,2-dimethylcyclohexene
1,2-dimethylcyclohexene
Why do primary alcohols undergo S
N
2 reactions with hydrogen halides?
They form unstable carbocations.
They are very reactive.
They undergo elimination reactions.
They have poor leaving groups.
They have little steric hindrance.
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