Question 1

Draw the most stable conformer of trans-1-ethyl-3-methylcyclohexane.

Accepted Answer

The answer of Draw the most stable conformer of trans-1-ethyl-3-methylcyclohexane....

Question 2

Which of the following compounds does not have the molecular formula C6H14O?

Accepted Answer

A) 1-hexanol 
B) 2-hexanol 
C) 3-methyl-2-pentanol 
D) 3-methyl-3-pentanol 
E) cyclohexanol 
A) 1-hexanol 
B) 2-hexanol 
C) 3-methyl-2-pentanol 
D) 3-methyl-3-pentanol 
E) cyclohexanol

Question 3

Which of the following statements about the conformers that result from rotation about the C2-C3 bond of butane is correct?

Accepted Answer

A) The highest energy conformer is one in which methyl groups are eclipsed by hydrogens. 
B) The gauche conformer is an eclipsed one. 
C) Steric strain is absent in the eclipsed forms. 
D) Torsional strain is absent in the eclipsed forms. 
E) none of the above 
A) The highest energy conformer is one in which methyl groups are eclipsed by hydrogens. 
B) The gauche conformer is an eclipsed one. 
C) Steric strain is absent in the eclipsed forms. 
D) Torsional strain is absent in the eclipsed forms. 
E) none of the above

Question 4

Which of the following is a tertiary amine?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 5

Which of the following would have the highest boiling point?

Accepted Answer

A) CH3CH2-O-CH2CH2-O-CH3 
B) CH3-O-CH2CH2CH2-O-CH3 
C) HO-CH2CH2CH2CH2-OH 
D) CH3CH2-O-CH2-O-CH2CH3 
E)    
A) CH3CH2-O-CH2CH2-O-CH3 
B) CH3-O-CH2CH2CH2-O-CH3 
C) HO-CH2CH2CH2CH2-OH 
D) CH3CH2-O-CH2-O-CH2CH3 
E)

Question 6

Which of the following correctly ranks the cycloalkanes in order of increasing ring strain per methylene?

Accepted Answer

A) cyclopropane < cyclobutane < cyclohexane < cycloheptane 
B) cyclohexane < cyclopentane < cyclobutane < cyclopropane 
C) cyclopentane < cyclobutane < cyclopentane < cyclopropane 
D) cyclopentane < cyclopropane < cyclobutane < cyclohexane 
E) cyclopropane < cyclopentane < cyclobutane < cyclohexane 
A) cyclopropane < cyclobutane < cyclohexane < cycloheptane 
B) cyclohexane < cyclopentane < cyclobutane < cyclopropane 
C) cyclopentane < cyclobutane < cyclopentane < cyclopropane 
D) cyclopentane < cyclopropane < cyclobutane < cyclohexane 
E) cyclopropane < cyclopentane < cyclobutane < cyclohexane

Question 7

List the conformations in order of decreasing stability.

Accepted Answer

The answer of List the conformations in order of decreasing...

Question 8

Provide an acceptable name for the alkane shown below.

Accepted Answer

5-sec-butyl-2,2-dime

Question 9

There are 8 isomers that have the molecular formula C5H11Br. How many of these are tertiary alkyl bromides?

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
E) 8 
A) 0 
B) 1 
C) 2 
D) 3 
E) 8

Question 10

Which of the following is the most soluble in H2O?

Accepted Answer

A) CH3OCH3 
B) CH3CH2OH 
C) CH3CH2Cl 
D) CH3CH2CH3 
E) CH3CHO 
A) CH3OCH3 
B) CH3CH2OH 
C) CH3CH2Cl 
D) CH3CH2CH3 
E) CH3CHO

Question 11

Identify the most stable conformation of butane.

Accepted Answer

A) anti 
B) eclipsed 
C) gauche 
D) totally eclipsed 
E) adjacent 
A) anti 
B) eclipsed 
C) gauche 
D) totally eclipsed 
E) adjacent

Question 12

Give the structure of tetramethylammonium chloride.

Accepted Answer

The answer of Give the structure of tetramethylammonium chloride....

Question 13

Provide an acceptable name for the compound shown below.

Accepted Answer

5-ethyl-3,

Question 14

Name the compound.

Accepted Answer

A) 2-cyclopentyl-4-methylhexane 
B) 5-cyclopentyl-3-methylhexane 
C) 1-cyclopentyl-1,3-dimethylpentane 
D) 2-cyclopentyl-4-methylheptane 
E) 5-cyclopentyl-3-methylheptane 
A) 2-cyclopentyl-4-methylhexane 
B) 5-cyclopentyl-3-methylhexane 
C) 1-cyclopentyl-1,3-dimethylpentane 
D) 2-cyclopentyl-4-methylheptane 
E) 5-cyclopentyl-3-methylheptane

Question 15

Provide the systematic name of the compound shown.

Accepted Answer

6,7-dimeth

Question 16

Which of the following best explains the relative stabilities of the eclipsed and staggered forms of ethane? The ________ form has the most ________ strain.

Accepted Answer

A) eclipsed; steric 
B) eclipsed; torsional 
C) staggered; steric 
D) staggered; torsional 
A) eclipsed; steric 
B) eclipsed; torsional 
C) staggered; steric 
D) staggered; torsional

Question 17

Draw the Newman projection that represents the least stable conformation of 3,3-dimethylhexane viewed along the C3-C4 bond.

Accepted Answer

The answer of Draw the Newman projection that represents the...

Question 18

Draw an acceptable structure for 4-isopropyl-2-methylheptane.

Accepted Answer

The answer of Draw an acceptable structure for 4-isopropyl-2-methylheptane....

Question 19

Which of the following best explains the reason for the relative stabilities of the conformers shown?

Accepted Answer

A) I has more torsional strain. 
B) I has more steric strain. 
C) II has more torsional strain. 
D) II has more steric strain. 
A) I has more torsional strain. 
B) I has more steric strain. 
C) II has more torsional strain. 
D) II has more steric strain.

Question 20

Which of the following is the most stable conformation of bromocyclohexane?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Exam 3: An Introduction to Organic Compounds

Draw the most stable conformer of trans-1-ethyl-3-methylcyclohexane.

Which of the following compounds does not have the molecular formula C6H14O?

Which of the following statements about the conformers that result from rotation about the C2-C3 bond of butane is correct?

Which of the following is a tertiary amine?

Which of the following would have the highest boiling point?

Which of the following correctly ranks the cycloalkanes in order of increasing ring strain per methylene?

List the conformations in order of decreasing stability.

Provide an acceptable name for the alkane shown below.

There are 8 isomers that have the molecular formula C5H11Br. How many of these are tertiary alkyl bromides?

Which of the following is the most soluble in H2O?

Identify the most stable conformation of butane.

Give the structure of tetramethylammonium chloride.

Provide an acceptable name for the compound shown below.

Name the compound.

Provide the systematic name of the compound shown.

Which of the following best explains the relative stabilities of the eclipsed and staggered forms of ethane? The ________ form has the most ________ strain.

Draw the Newman projection that represents the least stable conformation of 3,3-dimethylhexane viewed along the C3-C4 bond.

Draw an acceptable structure for 4-isopropyl-2-methylheptane.

Which of the following best explains the reason for the relative stabilities of the conformers shown?

Which of the following is the most stable conformation of bromocyclohexane?

Remembering General Chemistry: Electronic Structure and Bonding

Acids and Bases: Central to Understanding Organic Chemistry

Isomers: the Arrangement of Atoms in Space

Alkenes Thermodynamics and Kinetics

Reactions of Alkenes

Reactions of Alkynes Introduction to Multistep Synthesis

Electron Delocalization, Resonance, and Aromaticity More About Molecular Orbital Theory

Substitution Reactions of Alkyl Halides

Elimination Reactions of Alkyl Halides Competition Between Substitution and Elimination

Reactions of Alcohols, Ethers, Epoxides, and Sulfur-Containing Compounds

Organometallic Compounds

Reactions of Alkanes, Radicals

Mass Spectrometry, Infrared Spectroscopy, and Uvvis Spectroscopy

Nmr Spectroscopy

Reactions of Carboxylic Acids and Carboxylic Acid Derivatives

Reactions of Aldehydes and Ketones

Reactions at the Alpha Carbon of Carbonyl Compounds

Reactions of Benzene and Substituted Benzenes

More About Amines Heterocylic Compounds

Carbohydrates

Amino Acids, Peptides, and Proteins

Catalysis

The Organic Mechanisms of the Coenzymes

The Chemistry of Metabolism

Nucleosides, Nucleotides, and Nucleic Acids

Synthetic Polymers

Pericyclic Reactions

Filters

Which of the following compounds does not have the molecular formula C₆H₁₄O?

There are 8 isomers that have the molecular formula C₅H₁₁Br. How many of these are tertiary alkyl bromides?

Which of the following is the most soluble in H₂O?

Which of the following best explains the relative stabilities of the eclipsed and staggered forms of ethane? The form has the most strain.