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Which compound in each of the following pairs would have the higher boiling point? Explain your answers.

 

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Which compound in each of the following pairs would have the higher boiling point? Explain your answers.

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Which compound in each of the following pairs would have the higher boiling point? Explain your answers.

 

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Which compound in each of the following pairs would have the higher boiling point? Explain your answers.

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Which compound in each of the following pairs would have the higher boiling point? Explain your answers.

 

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Which compound in each of the following pairs would have the higher boiling point? Explain your answers.

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Which compound in each of the following pairs would have the higher boiling point? Explain your answers.

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Which compound in each of the following pairs would have the higher boiling point? Explain your answers.

 

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Analyze the statement: For a molecule to be polar, the presence of polar bonds is necessary, but it is not a sufficient requirement.

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Consider each of the following molecules in turn:

(d) dimethylberyllium, (CH3)2Be.

Describe the hybridization state of the central atom (i.e., O, N, B, or Be) of each molecule, tell what bond angles you would expect at the central atom, and state whether the molecule would have a dipole moment.

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Consider each of the following molecules in turn:

(c) trimethylboron, (CH3)3B

Describe the hybridization state of the central atom (i.e., O, N, B, or Be) of each molecule, tell what bond angles you would expect at the central atom, and state whether the molecule would have a dipole moment.

 

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Consider each of the following molecules in turn:

(b) trimethylamine, (CH3)3N

Describe the hybridization state of the central atom (i.e., O, N, B, or Be) of each molecule, tell what bond angles you would expect at the central atom, and state whether the molecule would have a dipole moment.

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Write a three-dimensional formula for each of the following molecules using the wedge–dashed formalism. If the molecule has a net dipole moment, indicate its direction with an arrow, →. If the molecule has no net dipole moment, you should so state. (You may ignore the small polarity of C-H bonds in working this and similar problems.)

(j) CH2O

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Write a three-dimensional formula for each of the following molecules using the wedge–dashed formalism. If the molecule has a net dipole moment, indicate its direction with an arrow, →. If the molecule has no net dipole moment, you should so state. (You may ignore the small polarity of C-H bonds in working this and similar problems.)

(i) CH3OH

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Write a three-dimensional formula for each of the following molecules using the wedge–dashed formalism. If the molecule has a net dipole moment, indicate its direction with an arrow, →. If the molecule has no net dipole moment, you should so state. (You may ignore the small polarity of C-H bonds in working this and similar problems.)

(h) CH3OCH3

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Write a three-dimensional formula for each of the following molecules using the wedge–dashed formalism. If the molecule has a net dipole moment, indicate its direction with an arrow, →. If the molecule has no net dipole moment, you should so state. (You may ignore the small polarity of C-H bonds in working this and similar problems.)

(g) BeF2

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Write a three-dimensional formula for each of the following molecules using the wedge–dashed wedge–line for-malism. If the molecule has a net dipole moment, indicate its direction with an arrow, → . If the molecule has no net dipole moment, you should so state. (You may ignore the small polarity of C - H bonds in working this and similar problems.)

(f) BCl3

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Write a three-dimensional formula for each of the following molecules using the wedge–dashed wedge–line for-malism. If the molecule has a net dipole moment, indicate its direction with an arrow, → . If the molecule has no net dipole moment, you should so state. (You may ignore the small polarity of C - H bonds in working this and similar problems.)

(e) CH2FCl

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Write a three-dimensional formula for each of the following molecules using the wedge–dashed wedge–line for-malism. If the molecule has a net dipole moment, indicate its direction with an arrow, → . If the molecule has no net dipole moment, you should so state. (You may ignore the small polarity of C - H bonds in working this and similar problems.)

(d) CF4

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Write a three-dimensional formula for each of the following molecules using the wedge–dashed wedge–line for-malism. If the molecule has a net dipole moment, indicate its direction with an arrow, → . If the molecule has no net dipole moment, you should so state. (You may ignore the small polarity of C - H bonds in working this and similar problems.)

(c) CHF3

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Write a three-dimensional formula for each of the following molecules using the wedge–dashed wedge–line for-malism. If the molecule has a net dipole moment, indicate its direction with an arrow, → . If the molecule has no net dipole moment, you should so state. (You may ignore the small polarity of C - H bonds in working this and similar problems.)

(b) CH2F2

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Write a three-dimensional formula for each of the following molecules using the wedge–dashed wedge–line for-malism. If the molecule has a net dipole moment, indicate its direction with an arrow, → . If the molecule has no net dipole moment, you should so state. (You may ignore the small polarity of C - H bonds in working this and similar problems.)

(a) CH3F

 

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Which of the following solvents should be capable of dissolving ionic compounds?

a. Liquid SO2

b. Liquid NH3

c. Benzene

d. CCl4

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Cetylethyldimethylammonium bromide is the common name for a compound with antiseptic properties. Predict its solubility behavior in water and in diethyl ether.

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Why does one expect the cis isomer of an alkene to have a higher boiling point than the trans isomer?

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