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Exam 2: Structure and Properties of Organic Molecules

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Question 61

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Which of the following best describes the relationship between the two structures shown?

A) They represent the same compound.
B) They represent different compounds that are constitutional isomers.
C) They represent different compounds that are geometric isomers.
D) They represent different compounds that are alkenes.
E) They represent different compounds that are alkanes.

F) A) and E)
G) D) and E)

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Question 62

Multiple Choice

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Which sequence ranks the following isomers in order of increasing boiling points?

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

E) None of the above
F) All of the above

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Question 63

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What two hybrid atomic orbitals overlap to form the C-C s bond in acetonitrile, CH₃C≡N?

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

What two hybrid atomic orbitals overlap to form the C-C s bond in allene, H₂C=C=CH₂?

Provide the condensed formulas of three structural isomers with molecular formula C₅H₁₂ and arrange them in order of increasing boiling point.

What is the approximate CCC bond angle in the compound below?

The HCH bond angle in propane (CH₃CH₂CH₃) is ________.

Are the two compounds shown below best described as $\underline{\text{ cis-trans isomers, constitutional isomers, }}$ or $\underline{\text{ not isomeric? }}$

What intermolecular forces are present among molecules in dimethyl ether, CH₃OCH₃?

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

Which of the following compounds is $\textbf{ not }$ a constitutional isomer of a compound with an empirical formula C₃H₇O and a formula mass of 118.164?

Anisole, the compound shown below, is an example of ________.

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

Draw the structure of any hydrocarbon alkene which contains 4 carbon atoms.

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

Which of the following does not contain a carbonyl group?

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

Provide the hybridization of oxygen in acetaldehyde (CH₃CHO) and estimate the OCH bond angle.

What is the hybridization of the nitrogen atom in the molecule below?