WorksheetsCHEM 1307 Exam 2
Total questions: 55
Worksheet time: 28mins
Which of the following was true of Kekulé's proposal for the structure of benzene?
It was readily accepted.
It was rejected because it was inconsistent with experiment.
It was not readily accepted since it did not account for the very different reactivity of benzene compared with alkenes.
It was not readily accepted since it did not account for the known structure of benzene.
Which of the following compounds is anisole?
What is an acceptable name of the following compound?
o-dimethylbenzene
m-dimethyllbenzene
p-diethylbenzene
m-diethylbenzene
Which of the following is a correct IUPAC name?
1,2-dichloro-4-bromobenzene
1-bromo-3,4-dichlorobenzene
4-bromo-1,2-dichlorobenzene
3,4-dichloro-1-bromobenzene
What is the IUPAC name for the following compound?
1-amino-2-chloro-5-bromobenzene
5-bromo-2-chloroaniline
1-chloro-4-bromo-2-aniline
4-bromo-1-chloro-2-aniline
Which of the following structures represents 2,4,6-tribromophenol?
Match up the applications to the compounds shown below?
(i) explosive; (ii) detergent
(i) detergent; (ii) explosive
(i) explosive; (ii) vitamin
(i) vitamin; (ii) detergent
Which of the following is a common feature of catechol, hydroquinone, and resorcinol?
They all have two methyl groups as substituents on a benzene ring.
They all have two hydroxyl groups as substituents on a benzene ring.
They all have one methyl and one hydroxyl as substituents on a benzene ring.
None of the above, these compounds do not have any common features.
Which of the following is the correct IUPAC name of the following compound?
1-propylphenol
2-propylphenol
2-hydroxypropylbenzene
2-propyl-1-hydroxybenzene
Consider the following structure: If one of the hydrogen atoms were replaced with an –NH2 group and another with a –Br group, the compound would as named as which of the following?
a derivative of benzene
a derivative of bromobenzene
a derivative of aminobenzene
a derivative of aniline
p-bromonitrobenzene is treated with hydrogen gas in the presence of a Pd catalyst. What would be the product of the reaction?
4-bromoaniline
benzene
bromobenzene
nitrobenzene
Which reagents/catalysts would be needed to convert benzene to p-bromonitrobenzene?
Br2/FeBr3
HNO3/H2SO4/Heat
NaOH
H2SO4/Heat
both Br2/FeBr3 and HNO3/H2SO4/Heat
Which of the following compounds has an extremely disagreeable odor?
CH3CH2OH
CH3CH2OCH2CH3
CH3CH2SH
none of these
What is the geometry at the OH-bearing carbon atom of all alcohols?
linear
tetrahedral
trigonal planar
none of these
What is the IUPAC name of the following compound?
2-methyl-4-hexanol
3-hydroxy-5-methylhexane
5-methyl-3-hexanol
4-hydroxy-2-methylhexane
Which of the following is the IUPAC name of sec-butyl alcohol?
1-butanol
2-butanol
2-methyl-1-propanol
2-methyl-2-propanol
Which of the following structures represents 3,3-dimethyl-1-butanol?
Which of the following statements is true?
All diols are glycols.
All glycols contain both a primary and a secondary alcohol.
All glycols are diols.
All glycols must have at least three carbon atoms.
Which of the following is a glycol?
none of these are glycol
Which of the following is true of the alcohol functional groups in 1,3-butanediol?
One is primary and one is secondary.
One is primary and one is tertiary.
Both are primary.
Neither is primary.
Of the alcohols with the molecular formula C4H9OH, which has the highest boiling point?
1-butanol
sec-butyl alcohol
tert-butyl alcohol
isobutyl alcohol
How many different alkene products (counting cis and trans isomers of a compound as a single product) could be formed when 2,3-dimethyl-3-pentanol is dehydrated?
1
2
3
4
Which of the following alkenes will be the major product when 2-methylcyclohexanol is heated with concentrated sulfuric acid?
Which of the alcohols shown below will react when heated with concentrated sulfuric acid to give the following alkene as the major product?
both
neither
If experimental conditions are carefully controlled, aldehydes can be obtained by the oxidation of which of the following?
1° alcohols
2° alcohols
3° alcohols
all of these
Which of the products listed below can be obtained from the reaction of the following alcohol with sodium dichromate in aqueous sulfuric acid?
What is the name of the −OCH3 group?
methyloxy
methoxy
oxymethyl
oxymeth
What is the common name for the following compound?
hexyl ether
propyl isopropyl ether
isopropyl propyl ether
none of these
Which of the following correctly gives the order of boiling points for the molecules pentanol, ethyl propyl ether, and hexane?
hexane > ethyl propyl ether > pentanol
hexane > pentanol > ethyl propyl ether
pentanol > ethyl propyl ether > hexane
pentanol > hexane > ethyl propyl ether
Which of the following is the IUPAC name for the following compound?
isobutyl mercaptan
sec-butyl mercaptan
2-butanethiol
1-methyl-1-propanethiol
Rubbing alcohol is made from which of the following precursors?
ethanol
propene
2-methylpropane
none of these
What is the IUPAC name for the following compound?
cyclohexyl ethyl ether
ethyl cyclohexyl ether
ethoxycyclohexane
cyclohexoxyethane
If a carbon atom is a stereocenter, which of the following statements must be true about that carbon?
It has four single bonds.
It has a double bond and two single bonds.
It has two double bonds.
Any of these bonding arrangements can be associated with a stereocenter.
Given the compounds 2,3-dimethylpentane and 2,4-dimethylpentane, which of the following is true?
Only 2,3-dimethylpentane is chiral.
Only 2,4-dimethylpentane is chiral.
both are chiral
neither is chiral
Which of the following three isomeric alcohols, 2-pentanol, 2-methyl-2-butanol, and 3-methyl-2-butanol, are chiral?
only 2-pentanol
only 2-methyl-2-butanol
both 2-pentanol and 2-methyl-2-butanol
both 2-pentanol and 3-methyl-2-butanol
Given the compounds 2-methyl-1-pentene and 2-methyl-2-pentene, which of the following statements is true?
Only 2-methyl-1-pentene is chiral.
Only 2-methyl-2-pentene is chiral.
Both are chiral
Neither is chiral
Given the compounds cis-1,4-dimethylcyclohexane, and trans-1,4-dimethylcyclohexane, which of the following statements is/are true?
(i) these two compounds are related as stereoisomers;
(ii) cis-1,4-dimethylcyclohexane is chiral;
(iii) trans-1,4-dimethylcyclohexane is chiral.
only (i) is true
only (i) and (ii) are true
only (ii) and (iii) are true
only (i) and (iii) are true
How many stereocenters are present in the following compound?
1
2
3
4
Which of the following would represent a racemic mixture?
a 1:1 mixture of 1-butanol and 2-butanol
all of the above
Which of the following compounds can exist as a pair of enantiomers?
(i) and (ii) only
(ii) and (iii) only
(i) and (iii) only
(i) only
In the R,S system, which of the following groups has highest priority?
alkyl
amino
hydroxyl
thiol
Among the following groups, what is the correct priority ordering in the R,S system?
(i) > (ii) > (iii) > (iv)
(ii) > (i) > (iv) > (iii)
(iv) > (ii) > (i) > (iii)
(ii) > (iv) > (i) > (iii)
Which of the following molecules has an R configuration?
both
neither
What are the R/S configurations at the following stereocenters?
(i) R (ii) R
(i) R (ii) S
(i) S (ii) R
(i) S (ii) S
Which of the following is a representation of the enantiomer of the following substance?
both
neither
How many stereoisomers are possible for the following triglyceride? (Include all types of stereoisomerism!)
1
2
4
8
How many stereoisomers exist for the following compound?
1
2
4
8
Illustrated here are the four stereoisomers of an amino acid which has two stereocenters. Which structure(s) is/are diastereomer(s) of structure A?
B only
C only
D only
B and D only
How many stereocenters are present in 3-methyl-2-pentanol?
1
2
3
5
When the sample chamber of a polarimeter is empty which of the following statements is true?
The maximum transmission of light occurs when the polarizer and analyzer are parallel to each other.
The maximum transmission of light occurs when the polarizer and analyzer are perpendicular to each other.
The maximum transmission of light occurs when the polarizer and analyzer are at an angle of 120° to each other.
Since the instrument is empty the positions of the polarizer and analyzer have no effect on the amount of transmission.
In order to distinguish the R and S forms of a chiral molecule with a single stereocenter, an enzyme must have binding sites for how many of the groups on the stereocenter of the molecule?
1
2
3
4
Which of the following is true of chiral drugs that are administered as single enantiomers?
They all have the R configuration.
They all have the S configuration.
Their enantiomers are always highly toxic.
None of the above is correct.
Which of the following is a liver toxin?
(R)-ibuprofen
(S)-ibuprofen
(R)-naproxen
(S)-naproxen
Consider the following two ball-and-stick models. Atoms other than carbon and hydrogen are indicated by the chemical symbol of the element.
If a solution contains 0.0500 mol of each substance, which of the following describes the solution?
chiral
nonsuperposable
racemic
all of these
Consider the following ball-and-stick model. Atoms other than carbon and hydrogen are indicated by the chemical symbol of the element.
What is the correct name for this substance?
(R)-2-butanol
(S)-2-butanol
2-butanol
cis-2-butanol
