Question 1

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

Accepted Answer

Question 2

Which atomic orbitals overlap to form the carbon-carbon s and p 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) B) and C)
F) A) and B)

Question 3

Which of the following statements is not true?

Accepted Answer

A)   The sp3C-H bond of an alkane is weaker than the spC-H bond of an alkyne.
B)   The carbon-carbon triple bond of an alkyne is shorter than the carbon-carbon bond of alkenes.
C)   The carbon-carbon triple bond of an alkene is exactly three times as strong as a carbon-carbon single bond of an alkane.
D)   The sp3C-H bond of an alkane is longer than the spC-H bond of an alkyne.E) B) and D)
F) All of the above

Question 4

Circle and name the functional groups in the following molecule.

Accepted Answer

The answer of Circle and name the functional groups in...

Question 5

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

Accepted Answer

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

Question 6

What is the approximate value of the H-C-H bond angles in methane, CH4?

Accepted Answer

A)   90 °\degree° 
B)   109 °\degree° 
C)   120 °\degree° 
D)   180 °\degree°E) A) and D)
F) A) and C)

Question 7

What is the molecular formula of aspartame, shown below?

Accepted Answer

The answer of What is the molecular formula of aspartame,...

Question 8

Which of the following elements has the highest electronegativity?

Accepted Answer

A)   C
B)   P
C)   Si
D)   ClE) B) and C)
F) All of the above

Question 9

Which of the circled bonds is the strongest?

Accepted Answer

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

Question 10

Which of the following is a tertiary amine?

Accepted Answer

A)   CH3CH2N(CH3) 2
B)   (CH3) 3CNH2
C)   CH3CH2NHCH3
D)   CH3CH2NHCH(CH3) 2E) B) and C)
F) A) and D)

Question 11

What is the approximate value of the H-C-H bond angles in a methyl anion, CH3-?

Accepted Answer

A)   90 °\degree° 
B)   109 °\degree° 
C)   120 °\degree° 
D)   180 °\degree°E) A) and D)
F) None of the above

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)  3COCH3 (more important > less important)    A)  1 > 2 > 3 B)  1 > 3 > 2 C)  2 > 1 > 3 D)  3 > 1 > 2" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   1 > 2 > 3
B)   1 > 3 > 2
C)   2 > 1 > 3
D)   3 > 1 > 2E) A) and D)
F) A) and C)

Question 13

What is the approximate value of the length of the CºC bond in ethyne, HCºCH?

Accepted Answer

A)   121 pm
B)   134 pm
C)   142 pm
D)   154 pmE) A) and D)
F) B) and C)

Question 14

Which of the following compounds is an alcohol?

Accepted Answer

A)   CH3CH2COOH
B)   CH3CH2OCH3
C)   CH3CH2CH2OH
D)   CH3CH2CHOE) A) and B)
F) C) and D)

Question 15

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

Accepted Answer

Question 16

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

Accepted Answer

Question 17

Which of the following is/are tetrahedral?

Accepted Answer

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

Question 18

Convert the following structure into a bond-line drawing.

Accepted Answer

The answer of Convert the following structure into a bond-line...

Question 19

Provide a neatly drawn figure to show the atomic orbitals that overlap to form each of the bonds in ammonia (NH3) and which contain the lone pair of electons. Label each orbital with its hybridization.

Accepted Answer

Question 20

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

Accepted Answer

Exam 1: Covalent Bonding and Shapes of Molecules

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

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Which of the following is/are tetrahedral?

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Which of the following compounds is an alcohol?

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Which of the following elements has the highest electronegativity?

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Convert the following structure into a bond-line drawing.

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Provide a neatly drawn figure to show the atomic orbitals that overlap to form each of the bonds in ammonia (NH3) and which contain the lone pair of electons. Label each orbital with its hybridization.

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Which of the circled bonds is the strongest?

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Circle and name the functional groups in the following molecule.

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

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

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

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

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

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What is the approximate value of the H-C-H bond angles in methane, CH4?

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What is the molecular formula of aspartame, shown below?

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

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Which of the following is a tertiary amine?

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What is the approximate value of the length of the CºC bond in ethyne, HCºCH?

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What is the approximate value of the H-C-H bond angles in a methyl anion, CH3-?

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Which of the following statements is not true?

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

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Provide a neatly drawn figure to show the atomic orbitals that overlap to form each of the bonds in ammonia (NH₃) and which contain the lone pair of electons. Label each orbital with its hybridization.

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

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

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

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

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

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What is the approximate value of the H-C-H bond angles in methane, CH₄?

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

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What is the approximate value of the H-C-H bond angles in a methyl anion, CH₃^-?

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