Question 1

Which of the following is a secondary (2°)  amine?

Accepted Answer

A)   1
B)   2
C)   3
D)   4E) All of the above
F) B) and C)

Question 2

Which of the following molecules has a molecular dipole moment?

Accepted Answer

A)   H2O
B)   CO2
C)   HC≡CH
D)   Cl2E) B) and C)
F) B) and D)

Question 3

The following species forms during an organic reaction.  The formal charge on the carbon atom indicated by the arrow is +1.

Accepted Answer

A) True 
 B)False

Question 4

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) E) A) and B)
F) A) and C)

Question 5

What is the approximate value of the length of the C≡C bond in ethyne, HC≡CH?

Accepted Answer

A)   121 pm
B)   134 pm
C)   142 pm
D)   154 pmE) All of the above
F) A) and D)

Question 6

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

Accepted Answer

A)   C2p + H1s
B)   C2sp + H1s
C)   C2sp2 + H1s
D)   C2sp3 + H1sE) B) and C)
F) C) and D)

Question 7

What is the approximate C−C−C bond angle in propene, CH3CH=CH2?

Accepted Answer

A)   90°
B)   109°
C)   120°
D)   180°E) All of the above
F) A) and B)

Question 8

Which of the following resonance structures makes the largest contribution to the structure of [H2CCHO] −? 2CCHO] −?   A)  1 B)  2 C)  3 D)  4" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   1
B)   2
C)   3
D)   4E) All of the above
F) B) and D)

Question 9

Provide a neatly drawn figure to show the atomic orbitals that overlap to form each of the bonds in ethyne (acetylene, HC≡CH). Label each bond (e.g., C-H σ bond) and indicate which atomic orbitals contribute to this bond (e.g., C 2sp3 + H 1s).

Accepted Answer

Question 10

Provide a neatly drawn figure to show the atomic orbitals that overlap to form each of the bonds in ethene (ethylene, H2C=CH2). Label each bond (e.g., C-H σ bond) and indicate which atomic orbitals contribute to this bond (e.g., C 2sp3 + H 1s).

Accepted Answer

Question 11

Which of the following molecules is not linear?

Accepted Answer

A)   H2O
B)   CO2
C)   HC≡CH
D)   Cl2E) A) and B)
F) A) and C)

Question 12

The energy released on the addition of an electron to an atom or a molecule is called _____.

Accepted Answer

A)   electron affinity
B)   ionization energy
C)   resonance energy
D)   delocalizationE) None of the above
F) B) and C)

Question 13

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 14

Which of the following molecules has a molecular dipole moment?

Accepted Answer

A)   CO2
B)   BF3
C)   NH3
D)   CH4E) A) and C)
F) None of the above

Question 15

Draw bond-line structures of all of the tertiary (3°) alcohols that have the formula C6H14O.

Accepted Answer

Question 16

Which atomic orbitals overlap to form the carbon-carbon σ and π bonding molecular orbitals of ethene, H2C=CH2?

Accepted Answer

A)   C2sp3 + C2sp3, and C2p + C2p
B)   C2sp2 + C2sp2, and C2sp2 + C2sp2
C)   C2sp2 + C2sp2, and C2p + C2p
D)   C2sp3 + C2sp3, and C2sp2 + C2sp2E) C) and D)
F) All of the above

Question 17

What is the approximate value of the length of the C=C bond in ethane, CH2=CH2?

Accepted Answer

A)   121 pm
B)   134 pm
C)   142 pm
D)   154 pmE) All of the above
F) A) and B)

Question 18

Which atomic orbitals overlap to form the C=O bond of acetone, (CH3) 2C=O?

Accepted Answer

A)   C 2sp3 + O 2sp2
B)   C 2sp2 + O 2p
C)   C 2sp2 + O 2sp2
D)   C 2sp3 + O 2spE) A) and B)
F) A) and C)

Question 19

Draw bond-line structures of all of the ketones that have the formula C5H10O.

Accepted Answer

Question 20

Which of the following bonds is a polar covalent bond?

Accepted Answer

A)   Na−F
B)   C−H
C)   C−O
D)   Cl−ClE) All of the above
F) C) and D)

Exam 1: Covalent Bonding and Shapes of Molecules

What is the approximate C−C−C bond angle in propene, CH3CH=CH2?

Correct AnswerverifiedShow Answer

Which of the following molecules is not linear?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which atomic orbitals overlap to form the C=O bond of acetone, (CH3) 2C=O?

Correct AnswerverifiedShow Answer

What is the approximate value of the length of the C≡C bond in ethyne, HC≡CH?

Correct AnswerverifiedShow Answer

What is the approximate value of the length of the C=C bond in ethane, CH2=CH2?

Correct AnswerverifiedShow Answer

Draw bond-line structures of all of the tertiary (3°) alcohols that have the formula C6H14O.

Correct AnswerverifiedShow Answer

Which of the following molecules has a molecular dipole moment?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following molecules has a molecular dipole moment?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The following species forms during an organic reaction. The formal charge on the carbon atom indicated by the arrow is +1.

Correct AnswerverifiedShow Answer

Which of the following resonance structures makes the largest contribution to the structure of [H2CCHO] −?

Correct AnswerverifiedShow Answer

Which of the following is a secondary (2°) amine?

Correct AnswerverifiedShow Answer

Which of the following bonds is a polar covalent bond?

Correct AnswerverifiedShow Answer

Draw bond-line structures of all of the ketones that have the formula C5H10O.

Correct AnswerverifiedShow Answer

Which atomic orbitals overlap to form the carbon-carbon σ and π bonding molecular orbitals of ethene, H2C=CH2?

Correct AnswerverifiedShow Answer

Provide a neatly drawn figure to show the atomic orbitals that overlap to form each of the bonds in ethyne (acetylene, HC≡CH). Label each bond (e.g., C-H σ bond) and indicate which atomic orbitals contribute to this bond (e.g., C 2sp3 + H 1s).

Correct AnswerverifiedShow Answer

The energy released on the addition of an electron to an atom or a molecule is called _____.

Correct AnswerverifiedShow Answer

Provide a neatly drawn figure to show the atomic orbitals that overlap to form each of the bonds in ethene (ethylene, H2C=CH2). Label each bond (e.g., C-H σ bond) and indicate which atomic orbitals contribute to this bond (e.g., C 2sp3 + H 1s).

Correct AnswerverifiedShow Answer

What is the approximate C−C−C bond angle in propene, CH₃CH=CH₂?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Which atomic orbitals overlap to form the C=O bond of acetone, (CH₃) ₂C=O?

Correct Answer
verified

Correct Answer
verified

What is the approximate value of the length of the C=C bond in ethane, CH₂=CH₂?

Correct Answer
verified

Draw bond-line structures of all of the tertiary (3°) alcohols that have the formula C₆H₁₄O.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

Which of the following resonance structures makes the largest contribution to the structure of [H₂CCHO] ⁻?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Draw bond-line structures of all of the ketones that have the formula C₅H₁₀O.

Correct Answer
verified

Which atomic orbitals overlap to form the carbon-carbon σ and π bonding molecular orbitals of ethene, H₂C=CH₂?

Correct Answer
verified

Provide a neatly drawn figure to show the atomic orbitals that overlap to form each of the bonds in ethyne (acetylene, HC≡CH). Label each bond (e.g., C-H σ bond) and indicate which atomic orbitals contribute to this bond (e.g., C 2sp³ + H 1s).

Correct Answer
verified

Correct Answer
verified

Provide a neatly drawn figure to show the atomic orbitals that overlap to form each of the bonds in ethene (ethylene, H₂C=CH₂). Label each bond (e.g., C-H σ bond) and indicate which atomic orbitals contribute to this bond (e.g., C 2sp³ + H 1s).

Correct Answer
verified