Question 1

A gas is ________ and assumes ________ of its container,whereas a liquid is ________ and assumes ________ of its container.

Accepted Answer

A) compressible, the volume and shape, not compressible, the shape of a portion 
B) compressible, the shape, not compressible, the volume and shape 
C) compressible, the volume and shape, compressible, the volume 
D) condensed, the volume and shape, condensed, the volume and shape 
E) condensed, the shape, compressible, the volume and shape 
A) compressible, the volume and shape, not compressible, the shape of a portion 
B) compressible, the shape, not compressible, the volume and shape 
C) compressible, the volume and shape, compressible, the volume 
D) condensed, the volume and shape, condensed, the volume and shape 
E) condensed, the shape, compressible, the volume and shape A

Question 2

What type(s)of intermolecular forces exist between NH3 and PO43-?

Accepted Answer

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

Question 3

The phase diagram of a substance is given above.The region that corresponds to the solid phase is ________.

Accepted Answer

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

Question 4

Which statement is true about liquids but not true about solids?

Accepted Answer

A) They flow and are highly ordered. 
B) They are highly ordered and not compressible. 
C) They flow and are compressible. 
D) They assume both the volume and the shape of their containers. 
E) They flow and are not compressible. 
A) They flow and are highly ordered. 
B) They are highly ordered and not compressible. 
C) They flow and are compressible. 
D) They assume both the volume and the shape of their containers. 
E) They flow and are not compressible.

Question 5

According to the phase diagram shown above,what is the normal boiling point (°C)?

Accepted Answer

A) 10 
B) -3 
C) 38 
D) 29 
E) 0 
A) 10 
B) -3 
C) 38 
D) 29 
E) 0

Question 6

With what compound will NH3 experience only dispersion intermolecular forces?

Accepted Answer

A) BF3 
B) LiF 
C) CH3I 
D) CH3OH 
E) HCN 
A) BF3 
B) LiF 
C) CH3I 
D) CH3OH 
E) HCN

Question 7

Some things take longer to cook at high altitudes than at low altitudes because ________.

Accepted Answer

A) water boils at a lower temperature at high altitude than at low altitude 
B) water boils at a higher temperature at high altitude than at low altitude 
C) heat isn't conducted as well in low density air 
D) natural gas flames don't burn as hot at high altitudes 
E) there is a higher moisture content in the air at high altitude 
A) water boils at a lower temperature at high altitude than at low altitude 
B) water boils at a higher temperature at high altitude than at low altitude 
C) heat isn't conducted as well in low density air 
D) natural gas flames don't burn as hot at high altitudes 
E) there is a higher moisture content in the air at high altitude

Question 8

The heating curve shown was generated by measuring the heat flow and temperature of a solid as it was heated.The heat flow into the sample in the segment D-E will yield the value of the ________ of this substance.

Accepted Answer

A) ΔHsub 
B) ΔHvap 
C) ΔHmelting 
D) ΔHfusion 
E) ΔHrxn 
A) ΔHsub 
B) ΔHvap 
C) ΔHmelting 
D) ΔHfusion 
E) ΔHrxn

Question 9

Which of the following is most likely to exhibit liquid-crystalline behavior?

Accepted Answer

A) CH3CH2-C(CH3)2-CH2CH3 
B) CH3CH2CH2CH2CH2CH2CH2CH3 
C) CH3CH2CH2CH2CH2-     
D)    
E)    
A) CH3CH2-C(CH3)2-CH2CH3 
B) CH3CH2CH2CH2CH2CH2CH2CH3 
C) CH3CH2CH2CH2CH2-     
D)    
E)

Question 10

The ________ (is)are associated with the heat energy being used up to increase distances between molecules.

Accepted Answer

A) phase change B → C 
B) phase changes B → C and D → E 
C) phase change D → E 
D) phase change B → E 
E) phase change C → E 
A) phase change B → C 
B) phase changes B → C and D → E 
C) phase change D → E 
D) phase change B → E 
E) phase change C → E

Question 11

Which compound has the strongest intermolecular forces?

Accepted Answer

A) CCl4 
B) CI4 
C) CH4 
D) H2 
E) O2 
A) CCl4 
B) CI4 
C) CH4 
D) H2 
E) O2

Question 12

________ liquid crystals are colored and change color with temperature changes.

Accepted Answer

A) Smectic A 
B) Nematic 
C) Cholesteric 
D) Smectic B 
E) Smectic C 
A) Smectic A 
B) Nematic 
C) Cholesteric 
D) Smectic B 
E) Smectic C

Question 13

Which of the following molecules has London Forces as its only intermolecular force?

Accepted Answer

A) H2O 
B) CH3CH2NH2 
C) HOCH2CH2OH 
D) CH3CH3 
E) None, all of the above exhibit dispersion forces. 
A) H2O 
B) CH3CH2NH2 
C) HOCH2CH2OH 
D) CH3CH3 
E) None, all of the above exhibit dispersion forces.

Question 14

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

Question 15

What is the predominant intermolecular force in HCN?

Accepted Answer

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

Question 16

The enthalpy change for converting 10.0 g of ice at -50.0 °C to water at 50.0 °C is ________ kJ.The specific heats of ice,water,and steam are     and   respectively.For   O,Δ   = 6.01 kJ/mol,and   .

Accepted Answer

A) 12.28 
B) 4.38 
C) 3138 
D) 6.47 
E) 9.15 
A) 12.28 
B) 4.38 
C) 3138 
D) 6.47 
E) 9.15

Question 17

Based on the following information,which compound has the strongest intermolecular forces?
Substance ΔHvap (kJ/mol)
Argon (Ar)6.3
Benzene (C6H6)31.0
Ethanol (C2H5OH)39.3
Water (H2O)40.8
Methane (CH4)9.2

Accepted Answer

A) Argon 
B) Benzene 
C) Ethanol 
D) Water 
E) Methane 
A) Argon 
B) Benzene 
C) Ethanol 
D) Water 
E) Methane

Question 18

The principal source of the difference in the normal boiling points of ICl (97 °C; molecular mass   and Br2 (59 °C; molecular mass 160 amu)is both dipole-dipole interactions and London dispersion forces.

Accepted Answer

A) True 
 B)False

Question 19

________ is the energy required to expand the surface area of a liquid by a unit amount of area.

Accepted Answer

A) Viscosity 
B) Surface tension 
C) Volatility 
D) Meniscus 
E) Capillary action 
A) Viscosity 
B) Surface tension 
C) Volatility 
D) Meniscus 
E) Capillary action

Question 20

With what compound will NH3 experience only ion-dipole intermolecular forces?

Accepted Answer

A) LiCl 
B) SiH4 
C) CH3I 
D) C3H7OH 
E) OCl2 
A) LiCl 
B) SiH4 
C) CH3I 
D) C3H7OH 
E) OCl2

Exam 11: Liquids and Intermolecular Forces

A gas is ________ and assumes ________ of its container,whereas a liquid is ________ and assumes ________ of its container.

What type(s)of intermolecular forces exist between NH3 and PO43-?

The phase diagram of a substance is given above.The region that corresponds to the solid phase is ________.

Which statement is true about liquids but not true about solids?

According to the phase diagram shown above,what is the normal boiling point (°C)?

With what compound will NH3 experience only dispersion intermolecular forces?

Some things take longer to cook at high altitudes than at low altitudes because ________.

The heating curve shown was generated by measuring the heat flow and temperature of a solid as it was heated.The heat flow into the sample in the segment D-E will yield the value of the ________ of this substance.

Which of the following is most likely to exhibit liquid-crystalline behavior?

The ________ (is)are associated with the heat energy being used up to increase distances between molecules.

Which compound has the strongest intermolecular forces?

________ liquid crystals are colored and change color with temperature changes.

Which of the following molecules has London Forces as its only intermolecular force?

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

What is the predominant intermolecular force in HCN?

The enthalpy change for converting 10.0 g of ice at -50.0 °C to water at 50.0 °C is ________ kJ.The specific heats of ice,water,and steam are and respectively.For O,Δ = 6.01 kJ/mol,and .

Based on the following information,which compound has the strongest intermolecular forces? Substance ΔHvap (kJ/mol) Argon (Ar)6.3 Benzene (C6H6)31.0 Ethanol (C2H5OH)39.3 Water (H2O)40.8 Methane (CH4)9.2

The principal source of the difference in the normal boiling points of ICl (97 °C; molecular mass and Br2 (59 °C; molecular mass 160 amu)is both dipole-dipole interactions and London dispersion forces.

________ is the energy required to expand the surface area of a liquid by a unit amount of area.

With what compound will NH3 experience only ion-dipole intermolecular forces?

Introduction: Matter, energy, and Measurement

Atoms, molecules, and Ions

Chemical Reactions and Reaction Stoichiometry

Reactions in Aqueous Solution

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

A gas is and assumes of its container,whereas a liquid is and assumes of its container.

What type(s)of intermolecular forces exist between NH₃ and PO₄^3-?

With what compound will NH₃ experience only dispersion intermolecular forces?

Based on the following information,which compound has the strongest intermolecular forces? Substance ΔH_vap (kJ/mol) Argon (Ar)6.3 Benzene (C₆H₆)31.0 Ethanol (C₂H₅OH)39.3 Water (H₂O)40.8 Methane (CH₄)9.2

The principal source of the difference in the normal boiling points of ICl (97 °C; molecular mass and Br₂ (59 °C; molecular mass 160 amu)is both dipole-dipole interactions and London dispersion forces.

With what compound will NH₃ experience only ion-dipole intermolecular forces?