Question 1

-The heating curve shown was generated by measuring the heat flow and temperature for a solid as it was heated. The slope of the ________ segment corresponds to the heat capacity of the gas.

Accepted Answer

A)  AB
B)  BC
C)  CD
D)  DE
E)  EFF) C) and E)
G) A) and D)

Question 2

In general, intramolecular forces determine the ________ properties of a substance and intermolecular forces determine its ________ properties.

Accepted Answer

The answer of In general, intramolecular forces determine the ________...

Question 3

In the ________ liquid crystalline phase, the component molecules are aligned along their long axis and are arranged in layers with the molecules in each plane twisted slightly in relation to the molecules in the planes above and below.

Accepted Answer

A)  nematic
B)  smectic A
C)  smectic B
D)  smectic C
E)  cholestericF) B) and D)
G) B) and E) E

Question 4

Which one of the following should have the lowest boiling point?

Accepted Answer

A)  CF4
B)  SnF3
C)  C4H9OH
D)  HCl
E)  F2OF) C) and D)
G) A) and E)

Question 5

Which one of the following substances will have hydrogen bonding as one of its intermolecular forces?

Accepted Answer

A)   
B)   
C)   
D)   
E)   F) D) and E)
G) A) and E)

Question 6

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

Accepted Answer

A)  LiCl
B)  SiH4
C)  CH3I
D)  C3H7OH
E)  OCl2F) None of the above
G) C) and D)

Question 7

fusion of this substance. A) AB B) BC C) CD D) DE E) EF" class="answers-bank-image d-inline" rel="preload" >
-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 ________ will yield the value of the ΔHfusion of this substance.

Accepted Answer

A)  AB
B)  BC
C)  CD
D)  DE
E)  EFF) A) and B)
G) C) and D)

Question 8

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

Accepted Answer

A) True 
 B)False

Question 9

C12H26 molecules are held together by ________.

Accepted Answer

A)  ion-ion interactions
B)  hydrogen bonding
C)  ion-dipole interactions
D)  dipole-dipole interactions
E)  dispersion forcesF) B) and E)
G) A) and C)

Question 10

-The heating curve shown was generated by measuring the heat flow and temperature for a solid as it was heated. The slope of the ________ segment corresponds to the heat capacity of the solid.

Accepted Answer

A)  AB
B)  BC
C)  CD
D)  DE
E)  EFF) B) and E)
G) C) and E)

Question 11

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 bondingF) A) and E)
G) A) and B)

Question 12

Which of the following molecules has hydrogen bonding as its only intermolecular force?

Accepted Answer

A)  NH3
B)  H2O
C)  C3H7OH
D)  HOCH2CH2OH
E)  None, all of the above exhibit dispersion forces.F) A) and E)
G) A) and D)

Question 13

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)  MethaneF) C) and E)
G) C) and D)

Question 14

A volatile liquid is one that ________.

Accepted Answer

A)  is highly flammable
B)  is highly viscous
C)  is highly hydrogen-bonded
D)  is highly cohesive
E)  readily evaporatesF) None of the above
G) A) and B)

Question 15

Which type of liquid crystal is colored and changes color with temperature?

Accepted Answer

A)  nematic
B)  smectic A
C)  cholesteric
D)  smectic B
E)  smectic CF) B) and D)
G) B) and E)

Question 16

Elemental iodine (I2) is a solid at room temperature. What is the major attractive force that exists among different I2 molecules in the solid?

Accepted Answer

A)  London dispersion forces
B)  dipole-dipole rejections
C)  ionic-dipole interactions
D)  covalent-ionic interactions
E)  dipole-dipole attractionsF) A) and B)
G) D) and E)

Question 17

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 forceF) A) and E)
G) A) and C)

Question 18

-The normal melting point of the substance with the phase diagram shown above is ________ °C.

Accepted Answer

A)  15
B)  25
C)  35
D)  45
E)  55F) A) and B)
G) A) and C) A

Question 19

What is the predominant intermolecular force in CH4?

Accepted Answer

A)  London-dispersion forces
B)  ion-dipole attraction
C)  ionic bonding
D)  dipole-dipole attraction
E)  hydrogen bondingF) B) and E)
G) None of the above A

Question 20

What types of intermolecular forces exist between HI and H2S?

Accepted Answer

A)  dipole-dipole and ion-dipole
B)  dispersion forces, dipole-dipole, and ion-dipole
C)  dispersion forces, hydrogen bonding, dipole-dipole, and ion-dipole
D)  dispersion forces and dipole-dipole
E)  dispersion forces and ion-dipoleF) A) and B)
G) A) and E)

Exam 11: Liquids and Intermolecular Forces

-The heating curve shown was generated by measuring the heat flow and temperature for a solid as it was heated. The slope of the ________ segment corresponds to the heat capacity of the gas.

Correct AnswerverifiedShow Answer

In general, intramolecular forces determine the ________ properties of a substance and intermolecular forces determine its ________ properties.

Correct AnswerverifiedShow Answer

In the ________ liquid crystalline phase, the component molecules are aligned along their long axis and are arranged in layers with the molecules in each plane twisted slightly in relation to the molecules in the planes above and below.

Correct AnswerverifiedE

Which one of the following should have the lowest boiling point?

Correct AnswerverifiedShow Answer

Which one of the following substances will have hydrogen bonding as one of its intermolecular forces?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

-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 ________ will yield the value of the ΔHfusion of this substance.

Correct AnswerverifiedShow Answer

The principal source of the difference in the normal boiling points of ICl (97 °C; molecular mass 162 amu)and Br2 (59 °C; molecular mass 160 amu)is both dipole-dipole interactions and London dispersion forces.

Correct AnswerverifiedShow Answer

C12H26 molecules are held together by ________.

Correct AnswerverifiedShow Answer

-The heating curve shown was generated by measuring the heat flow and temperature for a solid as it was heated. The slope of the ________ segment corresponds to the heat capacity of the solid.

Correct AnswerverifiedShow Answer

The predominant intermolecular force in CaBr2 is ________.

Correct AnswerverifiedShow Answer

Which of the following molecules has hydrogen bonding as its only intermolecular force?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A volatile liquid is one that ________.

Correct AnswerverifiedShow Answer

Which type of liquid crystal is colored and changes color with temperature?

Correct AnswerverifiedShow Answer

Elemental iodine (I2) is a solid at room temperature. What is the major attractive force that exists among different I2 molecules in the solid?

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

-The normal melting point of the substance with the phase diagram shown above is ________ °C.

Correct AnswerverifiedA

What is the predominant intermolecular force in CH4?

Correct AnswerverifiedA

What types of intermolecular forces exist between HI and H2S?

Correct AnswerverifiedShow Answer

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In general, intramolecular forces determine the properties of a substance and intermolecular forces determine its properties.

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E

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

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-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 ________ will yield the value of the ΔH_fusion of this substance.

Correct Answer
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The principal source of the difference in the normal boiling points of ICl (97 °C; molecular mass 162 amu)and Br₂ (59 °C; molecular mass 160 amu)is both dipole-dipole interactions and London dispersion forces.

Correct Answer
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C₁₂H₂₆ molecules are held together by ________.

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The predominant intermolecular force in CaBr₂ is ________.

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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

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Elemental iodine (I₂) is a solid at room temperature. What is the major attractive force that exists among different I₂ molecules in the solid?

Correct Answer
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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.

Correct Answer
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A

What is the predominant intermolecular force in CH₄?

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A

What types of intermolecular forces exist between HI and H₂S?

Correct Answer
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