Question 1

Which of the following is a tertiary (3$\circ$) alcohol?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 2

Which atomic orbitals overlap to form the carbon-hydrogen $\sigma$ bonding molecular orbitals of ethane, CH3CH3?

Accepted Answer

A) C2p + H1s 
B) C2sp + H1s 
C) C2sp2 + H1s 
D) C2sp3 + H1s 
A) C2p + H1s 
B) C2sp + H1s 
C) C2sp2 + H1s 
D) C2sp3 + H1s

Question 3

Which atomic orbitals overlap to form the carbon-hydrogen  $\sigma$ bonding molecular orbitals of ethyne, HC$\equiv$CH?

Accepted Answer

A) C2p + H1s 
B) C2sp + H1s 
C) C2sp2 + H1s 
D) C2sp3 + H1s 
A) C2p + H1s 
B) C2sp + H1s 
C) C2sp2 + H1s 
D) C2sp3 + H1s

Question 4

Draw bond-line structures of all of the alcohols that have the formula C4H10O.

Accepted Answer

Question 5

Which of the following statements is not true about the acetate anion, CH3CO2-?

Accepted Answer

A) The oxygen atoms bear the same amount of charge 
B) The two carbon-oxygen bonds are the same length 
C) The carbon atom bears the negative charge 
D) It is basic 
A) The oxygen atoms bear the same amount of charge 
B) The two carbon-oxygen bonds are the same length 
C) The carbon atom bears the negative charge 
D) It is basic

Question 6

The most electronegative elements in the periodic table are generally found toward the right in a horizontal row and toward the top in a column.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following molecules has a molecular dipole moment?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 8

The following molecules all contain the same functional group except 2.
CH3OH
CH3OCH3
CH3CH2OH
CH3CH(OH)CH3
1
2
3
4

Accepted Answer

A) True 
 B)False

Question 9

What is the ground-state electronic configuration of a fluorine atom (fluorine: atomic number 9)?

Accepted Answer

A) 1s12s12p7 
B) 1s22s22p5 
C) 1s22s22p6 
D) 1s02s22p7 
A) 1s12s12p7 
B) 1s22s22p5 
C) 1s22s22p6 
D) 1s02s22p7

Question 10

What is the approximate strength of the C-C bond of ethane?

Accepted Answer

A) 376 kJ/mol (90 kcal./mol) 
B) 422 kJ/mol (101 kcal./mol) 
C) 556 kJ/mol (133 kcal./mol) 
D) 727 kJ/mol (174 kcal./mol) 
A) 376 kJ/mol (90 kcal./mol) 
B) 422 kJ/mol (101 kcal./mol) 
C) 556 kJ/mol (133 kcal./mol) 
D) 727 kJ/mol (174 kcal./mol)

Question 11

Which of the following bonds is the most polar?

Accepted Answer

A) F-F 
B) H-F 
C) C-H 
D) C-Si 
A) F-F 
B) H-F 
C) C-H 
D) C-Si

Question 12

Rank the following in order of decreasing importance as a contributing resonance structure to the molecular structure of acetone, CH3COCH3 (more important > less important)

Accepted Answer

A) 1 > 2 > 3 
B) 1 > 3 > 2 
C) 2 > 1 > 3 
D) 3 > 1 > 2 
A) 1 > 2 > 3 
B) 1 > 3 > 2 
C) 2 > 1 > 3 
D) 3 > 1 > 2

Question 13

Provide a neatly drawn figure to show the atomic orbitals that overlap to form each of the bonds in water (H2O) and which contain the lone pair of electrons. Label each orbital with its hybridization.

Accepted Answer

Question 14

The maximum number of electrons that a molecular orbital can contain is four.

Accepted Answer

A) True 
 B)False

Question 15

What is the ground-state electronic configuration of a sodium cation (sodium: atomic number 11)?

Accepted Answer

A) 1s22s22p63s1 
B) 1s22s22p53s1 
C) 1s22s22p6 
D) 1s22s22p63s2 
A) 1s22s22p63s1 
B) 1s22s22p53s1 
C) 1s22s22p6 
D) 1s22s22p63s2

Question 16

Which of the following best represents the shape of a 2p atomic orbital of carbon?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 17

Circle all of the sp hybridized atoms in the following molecular structure.

Accepted Answer

The answer of Circle all of the sp hybridized atoms...

Question 18

Which of the following elements has the highest electronegativity?

Accepted Answer

A) N 
B) C 
C) O 
D) S 
A) N 
B) C 
C) O 
D) S

Question 19

The following two structural formulas represent isomers.

Accepted Answer

A) True 
 B)False

Question 20

Draw bond-line structures of all of the primary (1$\circ$) alcohols that have the formula C5H12O.

Accepted Answer

Exam 1: Covalent Bonding and Shapes of Molecules

Which of the following is a tertiary (3 ∘\circ∘ ) alcohol?

Which atomic orbitals overlap to form the carbon-hydrogen σ\sigmaσ bonding molecular orbitals of ethane, CH3CH3?

Which atomic orbitals overlap to form the carbon-hydrogen σ\sigmaσ bonding molecular orbitals of ethyne, HC ≡\equiv≡ CH?

Draw bond-line structures of all of the alcohols that have the formula C4H10O.

Which of the following statements is not true about the acetate anion, CH3CO2-?

The most electronegative elements in the periodic table are generally found toward the right in a horizontal row and toward the top in a column.

Which of the following molecules has a molecular dipole moment?

The following molecules all contain the same functional group except 2. CH3OH CH3OCH3 CH3CH2OH CH3CH(OH)CH3 1 2 3 4

What is the ground-state electronic configuration of a fluorine atom (fluorine: atomic number 9)?

What is the approximate strength of the C-C bond of ethane?

Which of the following bonds is the most polar?

Rank the following in order of decreasing importance as a contributing resonance structure to the molecular structure of acetone, CH3COCH3 (more important > less important)

Provide a neatly drawn figure to show the atomic orbitals that overlap to form each of the bonds in water (H2O) and which contain the lone pair of electrons. Label each orbital with its hybridization.

The maximum number of electrons that a molecular orbital can contain is four.

What is the ground-state electronic configuration of a sodium cation (sodium: atomic number 11)?

Which of the following best represents the shape of a 2p atomic orbital of carbon?

Circle all of the sp hybridized atoms in the following molecular structure.

Which of the following elements has the highest electronegativity?

The following two structural formulas represent isomers.

Draw bond-line structures of all of the primary (1 ∘\circ∘ ) alcohols that have the formula C5H12O.

Alkanes and Cycloalkanes

Stereoisomerism and Chirality

Acids and Bases

Alkenes: Bonding, Nomenclature, and Properties

Reactions of Alkenes

Alkynes

Haloalkanes, Halogenation, and Radical Reactions

Nucleophilic Substitution and Beta-Elimination

Alcohols

Ethers, Epoxides, and Sulfides

Infrared Spectroscopy

Nuclear Magnetic Resonance Spectroscopy

Mass Spectrometry

An Introduction to Organometallic Compounds

Aldehydes and Ketones

Carboxylic Acids

Functional Derivatives of Carboxylic Acids

Enolate Anions and Enamines

Dienes, Conjugated Systems, and Pericyclic Reactions

Benzene and the Concept of Aromaticity

Reactions of Benzene and Its Derivatives

Amines

Catalytic Carbon-Carbon Bond Formation

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids

Organic Polymer Chemistry

Filters

Which of the following is a tertiary (3^$\circ$) alcohol? $Which of the following is a tertiary (3<sup> \circ </sup>) alcohol?$

Which atomic orbitals overlap to form the carbon-hydrogen $\sigma$ bonding molecular orbitals of ethane, CH₃CH₃?

Which atomic orbitals overlap to form the carbon-hydrogen $\sigma$ bonding molecular orbitals of ethyne, HC $\equiv$ CH?

Draw bond-line structures of all of the alcohols that have the formula C₄H₁₀O.

Which of the following statements is not true about the acetate anion, CH₃CO₂^-?

The following molecules all contain the same functional group except 2. CH₃OH CH₃OCH₃ CH₃CH₂OH CH₃CH(OH)CH₃ 1 2 3 4

Rank the following in order of decreasing importance as a contributing resonance structure to the molecular structure of acetone, CH₃COCH₃ (more important > less important)

Provide a neatly drawn figure to show the atomic orbitals that overlap to form each of the bonds in water (H₂O) and which contain the lone pair of electrons. Label each orbital with its hybridization.

Draw bond-line structures of all of the primary (1^$\circ$) alcohols that have the formula C₅H₁₂O.