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Exam 2: Structure and Properties of Organic Molecules

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Question 41

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

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Question 42

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Choose the term below which best describes the geometry of acetylene (HCCH) .

A) trigonal bipyramidal
B) trigonal
C) tetrahedral
D) square planar
E) linear

F) None of the above
G) A) and B)

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Question 43

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The molecule shown below contains ________ pi bonds and ________ sigma bonds.

Which of the following functional groups $\textbf{ does not }$ have at least one sp² hybridized carbon atom as a constituent of the group?

Provide the condensed structures of two structurally isomeric amines that contain two carbons.

Triethylamine [(CH₃CH₂) ₃N] is a molecule in which the nitrogen atom is ________ hybridized and the CNC bond angle is ________.

Explain why the free rotation about the carbon-carbon bond in CH₃CH₃ is not present in CH₂CH₂.

Which atomic orbital combination would result in a molecular sigma bond?

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

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

Would you expect sodium chloride (NaCl) to be highly soluble in the organic solvent hexane (CH₃CH₂CH₂CH₂CH₂CH₃)? Briefly explain your answer.

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

Which molecule below is an ether?

Provide the hybridization of oxygen in dimethyl ether (CH₃OCH₃) and estimate the COC bond angle.

Draw the structure of any hydrocarbon alkane which contains 5 carbon atoms.

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

What two hybrid atomic orbitals overlap to form the C-C s bond in acetaldehyde, CH₃CHO?

How many π bonds are present in the molecule shown?

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

Does the C – O bond in methanol (CH₃OH) possess an individual bond dipole moment? Briefly explain your answer.