Question 1

Which molecule below is an alkene?

Accepted Answer

A)   CH3CH2OCH2CH3
B)   (CH3) 2CHCH2OH
C)   (CH3) 2C=CH2
D)   (CH3) 2CHCH2NH2
E)   CH3CH2CH2CO2HF) A) and D)
G) All of the above C

Question 2

Consider 1,2-dibromoethene, shown below. Use arrows to represent the individual bond dipoles. Would you expect this molecule to be polar? Briefly explain your reasoning.

Accepted Answer

<img  loading="lazy" src="/assets/images/blured-textbook.svg" class="d-inline m-1" alt="blured image" width="139" height="30"> No, you would not expect this...

Question 3

The HNC bond angle in the cation [CH2NH2]+ is approximately ________.

Accepted Answer

A)   60°
B)   90°
C)   109.5°
D)   120°
E)   180°F) B) and E)
G) A) and D)

Question 4

Which of the following statements concerning the cyclic molecule shown is not true? 2 hybrid atomic orbitals. C)  It contains a σ molecular orbital formed by the overlap of two carbon sp3 hybrid atomic orbitals. D)  It contains a π molecular orbital formed by the overlap of two carbon p atomic orbitals. E)  It contains a σ molecular orbital formed by the overlap of a carbon p atomic orbital with an oxygen sp3 atomic orbital." class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   It contains a π molecular orbital formed by the overlap of a carbon p atomic orbital with an oxygen p atomic orbital.
B)   It contains a σ molecular orbital formed by the overlap of two carbon sp2 hybrid atomic orbitals.
C)   It contains a σ molecular orbital formed by the overlap of two carbon sp3 hybrid atomic orbitals.
D)   It contains a π molecular orbital formed by the overlap of two carbon p atomic orbitals.
E)   It contains a σ molecular orbital formed by the overlap of a carbon p atomic orbital with an oxygen sp3 atomic orbital.F) D) and E)
G) B) and D)

Question 5

Choose the correct hybridization for the atom indicated in the molecule below. 2 C)  sp3 D)  none of the above" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   sp
B)   sp2
C)   sp3
D)   none of the aboveE) None of the above
F) All of the above

Question 6

How many carbon-carbon σ bonds are present in the molecule shown?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   5F) B) and C)
G) A) and C)

Question 7

What intermolecular attractions exist in a pure sample of methylthiol, CH3SH?

Accepted Answer

London dispersion forces and dipole-dipole attractions.

Question 8

What kind of molecular orbital (σ, σ*, π, or π*) results when the two atomic orbitals shown below interact in the manner indicated?

Accepted Answer

Question 9

The hybridization of the nitrogen in the molecule shown below is sp2. Briefly explain why.

Accepted Answer

This molecule has resonance structures where the lone pair on the nitrogen is delocalized in to the ring through a pi bond. This requires the nitrogen to be sp² hybridized.

Question 10

Vildagliptin is a recently released antidiabetic drug (J. Med. Chem. 2010, 7902). Circle and name each functional group in vildagliptin.

Accepted Answer

The answer of Vildagliptin is a recently released antidiabetic drug...

Question 11

Choose the correct hybridization for the atom indicated in the molecule below. 2 C)  sp3 D)  none of the above" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   sp
B)   sp2
C)   sp3
D)   none of the aboveE) A) and B)
F) A) and C)

Question 12

Use the following structure for the two questions below.
Saquinavir Structure 3CN B)  CH3COOH C)  CH3CH2CH2OH D)  CH3CH2NHCH3 E)  CH3CH2CH2NO2" class="answers-bank-image d-inline" rel="preload" >
-Which of the molecules below can be properly called an amine?

Accepted Answer

A)   CH3CN
B)   CH3COOH
C)   CH3CH2CH2OH
D)   CH3CH2NHCH3
E)   CH3CH2CH2NO2F) A) and B)
G) D) and E)

Question 13

From a molecular orbital perspective why isn't there relatively free rotation about the carbon-carbon double bond in ethene (CH2=CH2)?

Accepted Answer

Two carbon p atomic orbitals overlap sid...

Question 14

Choose the correct hybridization for the atom indicated in the molecule below. 2 C)  sp3 D)  none of the above" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   sp
B)   sp2
C)   sp3
D)   none of the aboveE) A) and B)
F) A) and C)

Question 15

Which of the following statements about π molecular orbitals is/are correct?

Accepted Answer

A)   π molecular orbitals are cylindrically symmetric.
B)   Most of the electron density in a π molecular orbital is centered above and below the internuclear axis.
C)   When two atoms are connected by a double bond, both of these bonds are π bonds.
D)   Both statements B and C are correct.
E)   Statements A, B, and C are all correct.F) None of the above
G) B) and D)

Question 16

Sodium hydride (NaH)  is a base that is commonly used in organic reactions. The pKa of H2 is 36. Which of the following compounds could not be used as a solvent if you were using NaH?

Accepted Answer

A)   2 is 36. Which of the following compounds could not be used as a solvent if you were using NaH? 
A)     
B)     
C)   CH3CH2OH 
D)   CH3CH2CH2CH2CH3CH3" class="answers-bank-image d-inline" rel="preload" >
B)   2 is 36. Which of the following compounds could not be used as a solvent if you were using NaH? 
A)     
B)     
C)   CH3CH2OH 
D)   CH3CH2CH2CH2CH3CH3" class="answers-bank-image d-inline" rel="preload" >
C)   CH3CH2OH
D)   CH3CH2CH2CH2CH3CH3E) A) and D)
F) None of the above

Question 17

Clonazapam (TM) is used to treat seizures and panic disorders and is shown below. Are there any aromatic hydrocarbons in the molecule? If so, circle them.

Accepted Answer

Yes, there...

Question 18

Draw a three-dimensional model of methanol, CH3OH, including lone pairs of electrons using wedges, dashes and straight lines.

Accepted Answer

Question 19

The HCH bond angle in allene (H2CCCH2) is ________.

Accepted Answer

Question 20

An orbital can be described by its ________, which is the mathematical description of the shape of the electron wave as it oscillates.

Accepted Answer

The answer of An orbital can be described by its...

Exam 2: Acids and Bases; Functional Groups

Which molecule below is an alkene?

Correct AnswerverifiedC

Consider 1,2-dibromoethene, shown below. Use arrows to represent the individual bond dipoles. Would you expect this molecule to be polar? Briefly explain your reasoning.

Correct Answerverified No, you would not expect this...View AnswerShow Answer

The HNC bond angle in the cation [CH2NH2]+ is approximately ________.

Correct AnswerverifiedShow Answer

Which of the following statements concerning the cyclic molecule shown is not true?

Correct AnswerverifiedShow Answer

Choose the correct hybridization for the atom indicated in the molecule below.

Correct AnswerverifiedShow Answer

How many carbon-carbon σ bonds are present in the molecule shown?

Correct AnswerverifiedShow Answer

What intermolecular attractions exist in a pure sample of methylthiol, CH3SH?

Correct AnswerverifiedLondon dispersion forces and dipole-dipole attractions.

What kind of molecular orbital (σ, σ*, π, or π*) results when the two atomic orbitals shown below interact in the manner indicated?

Correct AnswerverifiedShow Answer

The hybridization of the nitrogen in the molecule shown below is sp2. Briefly explain why.

Correct AnswerverifiedThis molecule has resonance structures where the lone pair on the nitrogen is delocalized in to the ring through a pi bond. This requires the nitrogen to be sp2 hybridized. 11eab5e1_c953_c1cf_9bae_891643d427ea_TB6199_00

Vildagliptin is a recently released antidiabetic drug (J. Med. Chem. 2010, 7902). Circle and name each functional group in vildagliptin.

Correct AnswerverifiedShow Answer

Choose the correct hybridization for the atom indicated in the molecule below.

Correct AnswerverifiedShow Answer

Use the following structure for the two questions below. Saquinavir Structure -Which of the molecules below can be properly called an amine?

Correct AnswerverifiedShow Answer

From a molecular orbital perspective why isn't there relatively free rotation about the carbon-carbon double bond in ethene (CH2=CH2)?

Correct AnswerverifiedTwo carbon p atomic orbitals overlap sid...View AnswerShow Answer

Choose the correct hybridization for the atom indicated in the molecule below.

Correct AnswerverifiedShow Answer

Which of the following statements about π molecular orbitals is/are correct?

Correct AnswerverifiedShow Answer

Sodium hydride (NaH) is a base that is commonly used in organic reactions. The pKa of H2 is 36. Which of the following compounds could not be used as a solvent if you were using NaH?

Correct AnswerverifiedShow Answer

Clonazapam (TM) is used to treat seizures and panic disorders and is shown below. Are there any aromatic hydrocarbons in the molecule? If so, circle them.

Correct AnswerverifiedYes, there...View AnswerShow Answer

Draw a three-dimensional model of methanol, CH3OH, including lone pairs of electrons using wedges, dashes and straight lines.

Correct AnswerverifiedShow Answer

The HCH bond angle in allene (H2CCCH2) is ________.

Correct AnswerverifiedShow Answer

An orbital can be described by its ________, which is the mathematical description of the shape of the electron wave as it oscillates.

Correct AnswerverifiedShow Answer

Correct Answer
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C

Correct Answer
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No, you would not expect this...
View Answer

The HNC bond angle in the cation [CH₂NH₂]⁺ is approximately ________.

Correct Answer
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What intermolecular attractions exist in a pure sample of methylthiol, CH₃SH?

Correct Answer
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London dispersion forces and dipole-dipole attractions.

What kind of molecular orbital (σ, σ^, π, or π^) results when the two atomic orbitals shown below interact in the manner indicated?

Correct Answer
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The hybridization of the nitrogen in the molecule shown below is sp². Briefly explain why.

Correct Answer
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This molecule has resonance structures where the lone pair on the nitrogen is delocalized in to the ring through a pi bond. This requires the nitrogen to be sp² hybridized. 11eab5e1_c953_c1cf_9bae_891643d427ea_TB6199_00

Correct Answer
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From a molecular orbital perspective why isn't there relatively free rotation about the carbon-carbon double bond in ethene (CH₂=CH₂)?

Correct Answer
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Two carbon p atomic orbitals overlap sid...
View Answer

Correct Answer
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Correct Answer
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Sodium hydride (NaH) is a base that is commonly used in organic reactions. The pKa of H₂ is 36. Which of the following compounds could not be used as a solvent if you were using NaH?

Correct Answer
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Correct Answer
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Yes, there...
View Answer

Draw a three-dimensional model of methanol, CH₃OH, including lone pairs of electrons using wedges, dashes and straight lines.

Correct Answer
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The HCH bond angle in allene (H₂CCCH₂) is ________.

Correct Answer
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Correct Answer
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