Question 1

Which substance has the lowest vapor pressure at room temperature?

Accepted Answer

A)   HF
B)   HCl
C)   HBr
D)   HI
E)   H2F) A) and E)
G) All of the above

Question 2

What types of intermolecular forces exist between hydrogen fluoride molecules?

Accepted Answer

A)   II and III
B)   I, II, and III
C)   I only
D)   III only
E)   I and IIIF) A) and E)
G) A) and C)

Question 3

Ice is less dense than water due to the formation of hydrogen bonds.

Accepted Answer

A) True 
 B)False

Question 4

Which liquid is expected to have the larger surface tension at a given temperature, CCl4 or H2O? Briefly explain.

Accepted Answer

Water would have the...

Question 5

The strongest intermolecular interactions between ethyl alcohol (CH3CH2OH)  molecules arise from

Accepted Answer

A)   dipole-dipole forces.
B)   London dispersion forces.
C)   hydrogen bonding.
D)   ion-dipole interactions.
E)   carbon-oxygen bonds.F) B) and E)
G) C) and D)

Question 6

Liquid ammonia can be used as a refrigerant and heat transfer fluid. How much energy is required to heat 25.0 g of NH3(l)  from -65.0°C to -12.0°C? 3(l)  from -65.0°C to -12.0°C?   A)  4.92 kJ B)  16.0 kJ C)  34.5 kJ D)  39.4 kJ E)  182.8 kJ" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   4.92 kJ
B)   16.0 kJ
C)   34.5 kJ
D)   39.4 kJ
E)   182.8 kJF) A) and E)
G) B) and D)

Question 7

Below is a representation of the unit cell for nickel(II)  oxide. How many O2- anions are there in the unit cell? 2- anions are there in the unit cell?   A)  1 B)  4 C)  8 D)  13 E)  14" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   1
B)   4
C)   8
D)   13
E)   14F) C) and D)
G) A) and E)

Question 8

Which one of the following pure substances will exhibit hydrogen bonding?

Accepted Answer

A)   CH4
B)   H2C=CH2
C)   H2O
D)   CHCl3
E)   CHF3F) A) and C)
G) C) and D)

Question 9

What name is given to the phenomenon where a thin film of water contracts and adheres to the wall of a glass cylinder?

Accepted Answer

A)   Surface tension
B)   Adhesion
C)   Polarity
D)   Capillary action
E)   CohesionF) C) and D)
G) A) and B)

Question 10

What is the intermolecular force that exists between a calcium ion and water?

Accepted Answer

A)   dipole-dipole forces
B)   London dispersion forces
C)   ion-dipole forces
D)   covalent bonding
E)   ion-ion forcesF) A) and D)
G) A) and E)

Question 11

Which of the following pure substances would be expected to have the highest boiling point?

Accepted Answer

A)   CH4
B)   Cl2
C)   Kr
D)   CH3Cl
E)   N2F) B) and E)
G) B) and C)

Question 12

Solids are generally most stable in crystalline form.

Accepted Answer

A) True 
 B)False

Question 13

Octane is a component of fuel used in internal combustion engines. The dominant intermolecular forces in octane are

Accepted Answer

A)   dipole-dipole forces.
B)   London dispersion forces.
C)   hydrogen bonding.
D)   covalent bonds.
E)   carbon-hydrogen bonds.F) B) and C)
G) D) and E)

Question 14

What is the name given to the attractive forces that hold particles together in the condensed phase?

Accepted Answer

A)   ionic bonds
B)   covalent bonds
C)   intermolecular forces
D)   electronegativity
E)   electron attractionF) B) and D)
G) None of the above

Question 15

Only molecules which do not have dipole moments can experience dispersion forces.

Accepted Answer

A) True 
 B)False

Question 16

Lead crystallizes in the face-centered cubic lattice. What is the coordination number for Pb?

Accepted Answer

A)   4
B)   6
C)   8
D)   10
E)   12F) B) and E)
G) A) and E)

Question 17

Consider the phase diagram shown below.  a. What phase(s) is/are present at point A?
b. What phase(s) is/are present at point B?
c. Name point C and explain its significance.
d. Starting at D, if the pressure is lowered while the temperature remains constant, describe what will happen.

Accepted Answer

a. liquid
b. solid, liquid, and gas
c. C...

Question 18

The strongest intermolecular interactions between pentane (C5H12)  molecules arise from

Accepted Answer

A)   dipole-dipole forces.
B)   London dispersion forces.
C)   hydrogen bonding.
D)   ion-dipole interactions.
E)   carbon-carbon bonds.F) A) and E)
G) C) and E)

Question 19

Arrange the following in order of increasing boiling point: RbCl, CH3Cl, CH3OH, CH4.

Accepted Answer

A)   CH3OH 3Cl 4
B)   CH3OH 4 3Cl 
C)   RbCl 3 Cl 3 OH 4 
D)   CH4 3OH 3Cl 
E)   CH4 3Cl 3OH < RbClF) B) and C)
G) C) and D)

Question 20

Which corresponds to the temperature-dependent partial pressure above the surface of a liquid?

Accepted Answer

A)   Surface tension
B)   Vapor pressure
C)   Boiling point
D)   Viscosity
E)   Capillary actionF) A) and C)
G) C) and D)

Exam 11: Intermolecular Forces and the Physical Properties of Liquids and Solids

What is the intermolecular force that exists between a calcium ion and water?

Correct AnswerverifiedShow Answer

Solids are generally most stable in crystalline form.

Correct AnswerverifiedShow Answer

Octane is a component of fuel used in internal combustion engines. The dominant intermolecular forces in octane are

Correct AnswerverifiedShow Answer

Which of the following pure substances would be expected to have the highest boiling point?

Correct AnswerverifiedShow Answer

Below is a representation of the unit cell for nickel(II) oxide. How many O2- anions are there in the unit cell?

Correct AnswerverifiedShow Answer

Which one of the following pure substances will exhibit hydrogen bonding?

Correct AnswerverifiedShow Answer

Which liquid is expected to have the larger surface tension at a given temperature, CCl4 or H2O? Briefly explain.

Correct AnswerverifiedWater would have the...View AnswerShow Answer

Which substance has the lowest vapor pressure at room temperature?

Correct AnswerverifiedShow Answer

Consider the phase diagram shown below. a. What phase(s) is/are present at point A? b. What phase(s) is/are present at point B? c. Name point C and explain its significance. d. Starting at D, if the pressure is lowered while the temperature remains constant, describe what will happen.

Correct Answerverifieda. liquidb. solid, liquid, and gasc. C...View AnswerShow Answer

Only molecules which do not have dipole moments can experience dispersion forces.

Correct AnswerverifiedShow Answer

Liquid ammonia can be used as a refrigerant and heat transfer fluid. How much energy is required to heat 25.0 g of NH3(l) from -65.0°C to -12.0°C?

Correct AnswerverifiedShow Answer

What types of intermolecular forces exist between hydrogen fluoride molecules?

Correct AnswerverifiedShow Answer

The strongest intermolecular interactions between pentane (C5H12) molecules arise from

Correct AnswerverifiedShow Answer

The strongest intermolecular interactions between ethyl alcohol (CH3CH2OH) molecules arise from

Correct AnswerverifiedShow Answer

Lead crystallizes in the face-centered cubic lattice. What is the coordination number for Pb?

Correct AnswerverifiedShow Answer

Arrange the following in order of increasing boiling point: RbCl, CH3Cl, CH3OH, CH4.

Correct AnswerverifiedShow Answer

What name is given to the phenomenon where a thin film of water contracts and adheres to the wall of a glass cylinder?

Correct AnswerverifiedShow Answer

What is the name given to the attractive forces that hold particles together in the condensed phase?

Correct AnswerverifiedShow Answer

Ice is less dense than water due to the formation of hydrogen bonds.

Correct AnswerverifiedShow Answer

Which corresponds to the temperature-dependent partial pressure above the surface of a liquid?

Correct AnswerverifiedShow Answer

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Below is a representation of the unit cell for nickel(II) oxide. How many O^2- anions are there in the unit cell?

Correct Answer
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Which liquid is expected to have the larger surface tension at a given temperature, CCl₄ or H₂O? Briefly explain.

Correct Answer
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Water would have the...
View Answer

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a. liquid
b. solid, liquid, and gas
c. C...
View Answer

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Liquid ammonia can be used as a refrigerant and heat transfer fluid. How much energy is required to heat 25.0 g of NH₃(l) from -65.0°C to -12.0°C?

Correct Answer
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Correct Answer
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The strongest intermolecular interactions between pentane (C₅H₁₂) molecules arise from

Correct Answer
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The strongest intermolecular interactions between ethyl alcohol (CH₃CH₂OH) molecules arise from

Correct Answer
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Arrange the following in order of increasing boiling point: RbCl, CH₃Cl, CH₃OH, CH₄.

Correct Answer
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