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Lecture 45 Intermolecular Forces.notebook 1 July 25, 2012

Lecture 4-5 Intermolecular Forces.notebook · Lecture 45 Intermolecular Forces.notebook 3 July 25, 2012 Oct 127:58 PM 1In which of the following are the intermolecular forces listed

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Page 1: Lecture 4-5 Intermolecular Forces.notebook · Lecture 45 Intermolecular Forces.notebook 3 July 25, 2012 Oct 127:58 PM 1In which of the following are the intermolecular forces listed

Lecture 4­5 Intermolecular Forces.notebook

1

July 25, 2012

Page 2: Lecture 4-5 Intermolecular Forces.notebook · Lecture 45 Intermolecular Forces.notebook 3 July 25, 2012 Oct 127:58 PM 1In which of the following are the intermolecular forces listed

Lecture 4­5 Intermolecular Forces.notebook

2

July 25, 2012

Page 3: Lecture 4-5 Intermolecular Forces.notebook · Lecture 45 Intermolecular Forces.notebook 3 July 25, 2012 Oct 127:58 PM 1In which of the following are the intermolecular forces listed

Lecture 4­5 Intermolecular Forces.notebook

3

July 25, 2012

Oct 12­7:58 PM

1 In which of the following are the intermolecular forces listed from the weakest to the strongest?

A dipole­dipole > London dispersion > hydrogen bonds

B London dispersion< dipole­dipole < hydrogen bonds

C hydrogen bonds < dipole­dipole < London dispersion

D London dispersion > hydrogen bonds > dipole­dipole

E London < hydrogen bonds < dipole­dipole

Oct 12­8:03 PM

2 Which of the following compounds will not hydrogen bond?

A CF4

B CH3OH

C H2NCH2CH2CH3

D CH3CH2CH2CH2COOH

E HClO

Oct 12­8:06 PM

3 When the following compounds are kept at the same temperature, the compound expected to evaporate most quickly is 

A C8H18

B C8H17OH

C C8H17NH2

D C6H14

E C7H15COOH

Oct 12­8:09 PM

4 C30H62 is a nonpolar compound that is a solid at room temperature.  Water is highly hydrogen bonded but is a liquid because

A Water molecules are very light.

B Water molecules ionize easily.

C The 62 hydrogen atoms in C30H62  allow for many instantaneous dipoles.

D C30H62  is so large it cannot melt.

E C30H62  has a lower melting point if dissolved in nonpolar hexane.