Question 1

Why do heteroatoms confer reactivity on a particular molecule?

Accepted Answer

A) Because they have lone pairs and create electron-rich sites on carbon. 
B) Because they have lone pairs and create electron-deficient sites on carbon. 
C) Because they are electronegative and act as electrophiles. 
D) Because they are electropositive and act as nucleophiles. 
A) Because they have lone pairs and create electron-rich sites on carbon. 
B) Because they have lone pairs and create electron-deficient sites on carbon. 
C) Because they are electronegative and act as electrophiles. 
D) Because they are electropositive and act as nucleophiles.

Question 2

Which of the following molecules are aromatic hydrocarbons?

Accepted Answer

A) I 
B) II 
C) III 
D) I and III 
A) I 
B) II 
C) III 
D) I and III

Question 3

Which of the following alkanes is expected to have the highest melting point?

Accepted Answer

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

Question 4

The indicated bond is:

Accepted Answer

A) Nucleophilic because it is electron-deficient. 
B) Electrophilic because it is electron-deficient. 
C) Nucleophilic because it electron-rich. 
D) Electrophilic because it is electron-rich. 
A) Nucleophilic because it is electron-deficient. 
B) Electrophilic because it is electron-deficient. 
C) Nucleophilic because it electron-rich. 
D) Electrophilic because it is electron-rich.

Question 5

Which of the following compounds has the highest boiling point?

Accepted Answer

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

Question 6

Which of the following compounds is expected to be the least soluble in H2O?

Accepted Answer

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

Question 7

Which of the following is a secondary alcohol?

Accepted Answer

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

Question 8

Rank the following compounds in order of decreasing melting point, putting the compound with the highest melting point first.

Accepted Answer

A) I > II > III 
B) II > III > I 
C) III > II > I 
D) III > I > II 
A) I > II > III 
B) II > III > I 
C) III > II > I 
D) III > I > II

Question 9

Rank the following compounds in order of increasing strength of intermolecular forces.

Accepted Answer

A) I > III > IV > II 
B) IV > II > I > III 
C) IV > I > III > II 
D) I > IV > II > III 
A) I > III > IV > II 
B) IV > II > I > III 
C) IV > I > III > II 
D) I > IV > II > III

Question 10

Which of the following intermolecular forces would not form between similar molecules of the structure below?

Accepted Answer

A) London dispersion forces 
B) Ion-ion 
C) Hydrogen bonding 
D) Dipole-dipole 
A) London dispersion forces 
B) Ion-ion 
C) Hydrogen bonding 
D) Dipole-dipole

Question 11

Which of the following compounds has the highest boiling point?

Accepted Answer

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

Question 12

Rank the following compounds in order of increasing strength of intermolecular forces, putting the molecule with the weakest intermolecular force first.

Accepted Answer

A) I < II < III 
B) II < I < III 
C) I < III < II 
D) II < III < I 
A) I < II < III 
B) II < I < III 
C) I < III < II 
D) II < III < I

Question 13

Which of the following molecules contain the same functional groups?

Accepted Answer

A) I, II, IV 
B) I, II, III 
C) II, III, IV 
D) I, III, IV 
A) I, II, IV 
B) I, II, III 
C) II, III, IV 
D) I, III, IV

Question 14

What molecular features are required for soap to properly dissolve grease and oil?

Accepted Answer

A) The molecule must be large. 
B) The molecule must contain a polar head. 
C) The molecule must contain a non-polar tail. 
D) The molecule must contain both a polar head and a non-polar tail. 
A) The molecule must be large. 
B) The molecule must contain a polar head. 
C) The molecule must contain a non-polar tail. 
D) The molecule must contain both a polar head and a non-polar tail.

Question 15

Which of the following structures contains an amide?

Accepted Answer

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

Question 16

Which of the following compounds is expected to be H2O soluble?

Accepted Answer

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

Question 17

Which of the following lists the correct functional groups found in aspartame, the artificial sweetener?

Accepted Answer

A) Amine, aromatic, carboxylic acid, ether, ketone. 
B) Amine, amide, aromatic, carboxylic acid, ester. 
C) Amide, alcohol, aromatic, carboxylic acid, ether. 
D) Amine, aromatic, carboxylic acid, ester, nitrile. 
A) Amine, aromatic, carboxylic acid, ether, ketone. 
B) Amine, amide, aromatic, carboxylic acid, ester. 
C) Amide, alcohol, aromatic, carboxylic acid, ether. 
D) Amine, aromatic, carboxylic acid, ester, nitrile.

Question 18

What intermolecular force is generally considered the strongest?

Accepted Answer

A) Hydrogen bonding 
B) London dispersion forces 
C) Covalent bonds 
D) Dipole-dipole 
A) Hydrogen bonding 
B) London dispersion forces 
C) Covalent bonds 
D) Dipole-dipole

Question 19

Which of the following structures contains a primary amine?

Accepted Answer

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

Question 20

Which of the following statements about the solubility of organic compounds in H2O is true?

Accepted Answer

A) The non-polar part of a molecule that is not attracted to water is said to be hydrophilic. 
B) The non-polar part of a molecule that is not attracted to water is said to be hydrophobic. 
C) The polar part of a molecule that can that can bond hydrogen to water is said to be hydrophobic. 
D) For an organic compound with one functional group that contains an O or N atom, the compound is water soluble only if it has 35 carbons. 
A) The non-polar part of a molecule that is not attracted to water is said to be hydrophilic. 
B) The non-polar part of a molecule that is not attracted to water is said to be hydrophobic. 
C) The polar part of a molecule that can that can bond hydrogen to water is said to be hydrophobic. 
D) For an organic compound with one functional group that contains an O or N atom, the compound is water soluble only if it has 35 carbons.

Exam 3: Introduction to Organic Molecules and Functional Groups

Why do heteroatoms confer reactivity on a particular molecule?

Which of the following molecules are aromatic hydrocarbons?

Which of the following alkanes is expected to have the highest melting point?

The indicated bond is:

Which of the following compounds has the highest boiling point?

Which of the following compounds is expected to be the least soluble in H2O?

Which of the following is a secondary alcohol?

Rank the following compounds in order of decreasing melting point, putting the compound with the highest melting point first.

Rank the following compounds in order of increasing strength of intermolecular forces.

Which of the following intermolecular forces would not form between similar molecules of the structure below?

Which of the following compounds has the highest boiling point?

Rank the following compounds in order of increasing strength of intermolecular forces, putting the molecule with the weakest intermolecular force first.

Which of the following molecules contain the same functional groups?

What molecular features are required for soap to properly dissolve grease and oil?

Which of the following structures contains an amide?

Which of the following compounds is expected to be H2O soluble?

Which of the following lists the correct functional groups found in aspartame, the artificial sweetener?

What intermolecular force is generally considered the strongest?

Which of the following structures contains a primary amine?

Which of the following statements about the solubility of organic compounds in H2O is true?

Structure and Bonding

Acids and Bases

Alkanes

Stereochemistry

Understanding Organic Reactions

Alkyl Halides and Nucleophilic Substitution

Alkyl Halides and Elimination Reactions

Alcohols, Ethers, and Related Compounds

Alkenes

Alkynes

Oxidation and Reduction

Mass Spectrometry and Infrared Spectroscopy

Nuclear Magnetic Resonance Spectroscopy

Radical Reactions

Conjugation, Resonance, and Dienes

Benzene and Aromatic Compounds

Reactions of Aromatic Compounds

Carboxylic Acids and the Acidity of the O-H Bond

Introduction to Carbonyl Chemistry;

Aldehydes and Ketones Nucleophilic Addition

Carboxylic Acids and Derivatives

Substitution Reactions of Carbonyl Compounds at the Alpha-Carbon

Carbonyl Condensation Reactions

Amines

Carbon-Carbon Bond Forming Reactions in Organic Synthesis

Pericyclic Reactions

Carbohydrates

Amino Acids and Proteins

Synthetic Polymers

Lipids

Filters

Which of the following compounds is expected to be the least soluble in H₂O?

Which of the following compounds is expected to be H₂O soluble?

Which of the following statements about the solubility of organic compounds in H₂O is true?