Question 1

The initial discovery of a liquid crystal resulted from studies on what compound?

Accepted Answer

cholesteryl benzoate

Question 2

The vapor pressure of a liquid __________.

Accepted Answer

A) increases linearly with increasing temperature 
B) increases nonlinearly with increasing temperature 
C) decreases linearly with increasing temperature 
D) decreases nonlinearly with increasing temperature 
E) is totally unrelated to its molecular structure 
A) increases linearly with increasing temperature 
B) increases nonlinearly with increasing temperature 
C) decreases linearly with increasing temperature 
D) decreases nonlinearly with increasing temperature 
E) is totally unrelated to its molecular structure B

Question 3

Of the following substances, __________ has the highest boiling point.

Accepted Answer

A) CH3CH2OH 
B) C2H6 
C) N2 
D) F2 
E) HOCH2CH2OH 
A) CH3CH2OH 
B) C2H6 
C) N2 
D) F2 
E) HOCH2CH2OH E

Question 4

What type(s)of intermolecular forces exist between Cl2 and CO3-2?

Accepted Answer

A) dispersion forces 
B) dispersion forces and ion-dipole 
C) dispersion forces, ion-dipole, and induced dipole - induced dipole 
D) dispersion forces and ion-induced dipole 
E) dispersion forces, ion-dipole, dipole-dipole, and ion-induced dipole 
A) dispersion forces 
B) dispersion forces and ion-dipole 
C) dispersion forces, ion-dipole, and induced dipole - induced dipole 
D) dispersion forces and ion-induced dipole 
E) dispersion forces, ion-dipole, dipole-dipole, and ion-induced dipole

Question 5

According to the phase diagram shown above, the normal melting point of this substance is __________°C.

Accepted Answer

A) -13 
B) 10 
C) 29 
D) 38 
E) 0 
A) -13 
B) 10 
C) 29 
D) 38 
E) 0

Question 6

In liquids, the attractive intermolecular forces are __________.

Accepted Answer

A) very weak compared with kinetic energies of the molecules 
B) strong enough to hold molecules relatively close together 
C) strong enough to keep the molecules confined to vibrating about their fixed lattice points 
D) not strong enough to keep molecules from moving past each other 
E) strong enough to hold molecules relatively close together but not strong enough to keep molecules from moving past each other 
A) very weak compared with kinetic energies of the molecules 
B) strong enough to hold molecules relatively close together 
C) strong enough to keep the molecules confined to vibrating about their fixed lattice points 
D) not strong enough to keep molecules from moving past each other 
E) strong enough to hold molecules relatively close together but not strong enough to keep molecules from moving past each other

Question 7

The phase diagram of a substance is given above. This substance is a __________ at -10°C and 1.0 atm.

Accepted Answer

A) liquid 
B) solid 
C) gas 
D) supercritical fluid 
E) crystal 
A) liquid 
B) solid 
C) gas 
D) supercritical fluid 
E) crystal

Question 8

What intermolecular force is responsible for the fact that ice is less dense than liquid water?

Accepted Answer

A) London dispersion forces 
B) dipole-dipole forces 
C) ion-dipole forces 
D) hydrogen bonding 
E) ionic bonding 
A) London dispersion forces 
B) dipole-dipole forces 
C) ion-dipole forces 
D) hydrogen bonding 
E) ionic bonding

Question 9

What is the predominant intermolecular force in CH3CH2OH?

Accepted Answer

A) London-dispersion forces 
B) ion-dipole attraction 
C) ionic bonding 
D) induced dipole-dipole attraction 
E) hydrogen-bonding 
A) London-dispersion forces 
B) ion-dipole attraction 
C) ionic bonding 
D) induced dipole-dipole attraction 
E) hydrogen-bonding

Question 10

The predominant intermolecular force in CaBr2 is __________.

Accepted Answer

A) London-dispersion forces 
B) ion-dipole forces 
C) ionic bonding 
D) dipole-dipole forces 
E) hydrogen bonding 
A) London-dispersion forces 
B) ion-dipole forces 
C) ionic bonding 
D) dipole-dipole forces 
E) hydrogen bonding

Question 11

What types of intermolecular forces exist between PH3 and N2?

Accepted Answer

A) dispersion forces and dipole-dipole forces 
B) dispersion forces and dipole-induced dipole forces 
C) dispersion forces and hydrogen bonds 
D) dispersion forces, hydrogen bonds, and induced dipole-induced dipole forces 
E) dispersion forces, hydrogen bonds, and dipole-induced dipole forces 
A) dispersion forces and dipole-dipole forces 
B) dispersion forces and dipole-induced dipole forces 
C) dispersion forces and hydrogen bonds 
D) dispersion forces, hydrogen bonds, and induced dipole-induced dipole forces 
E) dispersion forces, hydrogen bonds, and dipole-induced dipole forces

Question 12

The phase diagram of a substance is shown above. The area labeled __________ indicates the liquid phase for the substance.

Accepted Answer

A) w 
B) x 
C) y 
D) z 
E) y and z 
A) w 
B) x 
C) y 
D) z 
E) y and z

Question 13

The phase diagram of a substance is shown above. The area labeled __________ indicates the gas phase for the substance.

Accepted Answer

A) w 
B) x 
C) y 
D) z 
E) y and z 
A) w 
B) x 
C) y 
D) z 
E) y and z

Question 14

When NaCl dissolves in water, aqueous Na+ and Cl- ions result. The force of attraction that exists between Na+ and H2O is called a(n)__________ interaction.

Accepted Answer

A) dipole-dipole 
B) ion-ion 
C) hydrogen bonding 
D) ion-dipole 
E) London dispersion force 
A) dipole-dipole 
B) ion-ion 
C) hydrogen bonding 
D) ion-dipole 
E) London dispersion force

Question 15

Volatility and vapor pressure are __________.

Accepted Answer

A) inversely proportional to one another 
B) directly proportional to one another 
C) not related 
D) the same thing 
E) both independent of temperature 
A) inversely proportional to one another 
B) directly proportional to one another 
C) not related 
D) the same thing 
E) both independent of temperature

Question 16

Of the following, __________ is the most volatile.

Accepted Answer

A) CBr4 
B) CCl4 
C) CF4 
D) CH4 
E) C6H14 
A) CBr4 
B) CCl4 
C) CF4 
D) CH4 
E) C6H14

Question 17

The strongest interparticle attractions exist between particles of a __________ and the weakest interparticle attractions exist between particles of a __________.

Accepted Answer

A) solid, liquid 
B) solid, gas 
C) liquid, gas 
D) liquid, solid 
E) gas, solid 
A) solid, liquid 
B) solid, gas 
C) liquid, gas 
D) liquid, solid 
E) gas, solid

Question 18

Calculate the enthalpy change (in kJ)associated with the conversion of 25.0 grams of ice at -4.00°C to water vapor at 106.0°C. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K, respectively. For H2O, ΔHfus = 6.01 kJ/mol and ΔHvap = 40.67 kJ/mol.

Accepted Answer

A) 64.8 
B) 75.8 
C) 11000 
D) 12000 
E) 112 
A) 64.8 
B) 75.8 
C) 11000 
D) 12000 
E) 112

Question 19

Large intermolecular forces in a substance are manifested by __________.

Accepted Answer

A) low vapor pressure 
B) high boiling point 
C) high heats of fusion and vaporization 
D) high critical temperatures and pressures 
E) all of the above 
A) low vapor pressure 
B) high boiling point 
C) high heats of fusion and vaporization 
D) high critical temperatures and pressures 
E) all of the above

Question 20

On the phase diagram shown above, the coordinates of point __________ correspond to the triple point.

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Exam 11: Liquids and Intermolecular Forces

The initial discovery of a liquid crystal resulted from studies on what compound?

The vapor pressure of a liquid __________.

Of the following substances, __________ has the highest boiling point.

What type(s)of intermolecular forces exist between Cl2 and CO3-2?

According to the phase diagram shown above, the normal melting point of this substance is __________°C.

In liquids, the attractive intermolecular forces are __________.

The phase diagram of a substance is given above. This substance is a __________ at -10°C and 1.0 atm.

What intermolecular force is responsible for the fact that ice is less dense than liquid water?

What is the predominant intermolecular force in CH3CH2OH?

The predominant intermolecular force in CaBr2 is __________.

What types of intermolecular forces exist between PH3 and N2?

The phase diagram of a substance is shown above. The area labeled __________ indicates the liquid phase for the substance.

The phase diagram of a substance is shown above. The area labeled __________ indicates the gas phase for the substance.

When NaCl dissolves in water, aqueous Na+ and Cl- ions result. The force of attraction that exists between Na+ and H2O is called a(n)__________ interaction.

Volatility and vapor pressure are __________.

Of the following, __________ is the most volatile.

The strongest interparticle attractions exist between particles of a __________ and the weakest interparticle attractions exist between particles of a __________.

Calculate the enthalpy change (in kJ)associated with the conversion of 25.0 grams of ice at -4.00°C to water vapor at 106.0°C. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K, respectively. For H2O, ΔHfus = 6.01 kJ/mol and ΔHvap = 40.67 kJ/mol.

Large intermolecular forces in a substance are manifested by __________.

On the phase diagram shown above, the coordinates of point __________ correspond to the triple point.

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

What type(s)of intermolecular forces exist between Cl₂ and CO₃^-2?

What is the predominant intermolecular force in CH₃CH₂OH?

The predominant intermolecular force in CaBr₂ is __________.

What types of intermolecular forces exist between PH₃ and N₂?

When NaCl dissolves in water, aqueous Na⁺ and Cl^- ions result. The force of attraction that exists between Na⁺ and H₂O is called a(n)__________ interaction.

The strongest interparticle attractions exist between particles of a and the weakest interparticle attractions exist between particles of a .

Calculate the enthalpy change (in kJ)associated with the conversion of 25.0 grams of ice at -4.00°C to water vapor at 106.0°C. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K, respectively. For H₂O, ΔH_fus = 6.01 kJ/mol and ΔH_vap = 40.67 kJ/mol.