Question 1

Which one of the following involves ion-dipole interactions?

Accepted Answer

A)  Na+ and Cl-
B)  H+ and F-
C)  Na+ and Mg2+
D)  two water molecules
E)  Na+ and H2OF) A) and B)
G) A) and E)

Question 2

What is another name given to dispersion forces?

Accepted Answer

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

Question 3

Which substance has the highest vapor pressure at room temperature?

Accepted Answer

A)  HF
B)  HCl
C)  HBr
D)  HI
E)  All of these substances have the same vapor pressure at room temperature.F) A) and E)
G) A) and C)

Question 4

The vapor pressure of ethanol is 400.mmHg at 63.5°C.Its molar heat of vaporization is 39.3kJ/mol.What is the vapor pressure of ethanol,in mmHg,at 34.9°C? (R = 8.314 J/K • mol)

Accepted Answer

A)  109 mmHg
B)  220 mmHg
C)  366 mmHg
D)  376 mmHg
E)  1470 mmHgF) A) and D)
G) D) and E)

Question 5

Which one of the following crystallizes in a metallic lattice?

Accepted Answer

A)  C
B)  NaMnO4
C)  K
D)  LiClO4
E)  K2Cr2O7F) A) and B)
G) C) and E)

Question 6

Octane,C8H18,boils at 125°C,whereas water boils at 100°C.This information suggests that the dispersion forces in nonpolar octane molecules are stronger than the dispersion forces and hydrogen bonding in water.

Accepted Answer

A) True 
 B)False

Question 7

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 is t...

Question 8

Based on the phase diagram of a pure substance given below,what change of state occurs as the substance changes from point C to point D?

Accepted Answer

A)  The substance increases in temperature with a phase change from solid to liquid.
B)  The substance increases in temperature with a phase change from solid to vapor.
C)  The substance increases in temperature with a phase change from liquid to vapor.
D)  The substance increases in temperature but does not undergo a phase change.
E)  The substance increases in temperature and becomes a supercritical fluid.F) D) and E)
G) None of the above

Question 9

Which has the highest surface tension at a given temperature?

Accepted Answer

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

Question 10

The strongest intermolecular interactions between hydrogen fluoride (HF) molecules arise from

Accepted Answer

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

Question 11

What is defined as the number of atoms surrounding an atom in a crystal lattice and indicates how tightly the atoms are packed together?

Accepted Answer

A)  the unit cell
B)  the radius of the cubic cell
C)  the coordination number
D)  the area of the cubic cell
E)  the atoms themselvesF) B) and D)
G) C) and D)

Question 12

Vanadium crystallizes in a body-centered cubic lattice,and the length of the edge of a unit cell is 305 pm.What is the density of V?

Accepted Answer

A)  0.712 g/cm3
B)  2.98 g/cm3
C)  5.96 g/cm3
D)  8.77 g/cm3
E)  11.9 g/cm3F) A) and B)
G) All of the above

Question 13

Which one of the following pure substance has both dispersion forces and dipole-dipole forces?

Accepted Answer

A)  HCl
B)  BCl3
C)  Br2
D)  H2
E)  CO2F) D) and E)
G) A) and E)

Question 14

______________ is the name given to the phase change from a solid directly to a gas.

Accepted Answer

The answer of ______________ is the name given to the...

Question 15

Use the graph of vapor pressure to determine the normal boiling point of O2. 2.   A) 92 K B) 90.K C) 88 K D) 84 K E) 78 K" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  92 K
B)  90.K
C)  88 K
D)  84 K
E)  78 KF) None of the above
G) A) and B)

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

What is another name given to dispersion forces?

Correct Answer
verified

The vapor pressure of ethanol is 400.mmHg at 63.5°C.Its molar heat of vaporization is 39.3kJ/mol.What is the vapor pressure of ethanol,in mmHg,at 34.9°C? (R = 8.314 J/K • mol)

Correct Answer
verified

Which one of the following involves ion-dipole interactions?

Correct Answer
verified

Which one of the following crystallizes in a metallic lattice?

Correct Answer
verified

Use the graph of vapor pressure to determine the normal boiling point of O₂.

Correct Answer
verified

The strongest intermolecular interactions between hydrogen fluoride (HF) molecules arise from

Correct Answer
verified

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

Based on the phase diagram of a pure substance given below,what change of state occurs as the substance changes from point C to point D?

Correct Answer
verified

What is defined as the number of atoms surrounding an atom in a crystal lattice and indicates how tightly the atoms are packed together?

Correct Answer
verified

Vanadium crystallizes in a body-centered cubic lattice,and the length of the edge of a unit cell is 305 pm.What is the density of V?

Correct Answer
verified

Which one of the following pure substance has both dispersion forces and dipole-dipole forces?

Correct Answer
verified

Which substance has the highest vapor pressure at room temperature?

Correct Answer
verified

______________ is the name given to the phase change from a solid directly to a gas.

Correct Answer
verified

Octane,C₈H₁₈,boils at 125°C,whereas water boils at 100°C.This information suggests that the dispersion forces in nonpolar octane molecules are stronger than the dispersion forces and hydrogen bonding in water.

Correct Answer
verified

Which has the highest surface tension at a given temperature?

Correct Answer
verified

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

What is another name given to dispersion forces?

Correct AnswerverifiedShow Answer

The vapor pressure of ethanol is 400.mmHg at 63.5°C.Its molar heat of vaporization is 39.3kJ/mol.What is the vapor pressure of ethanol,in mmHg,at 34.9°C? (R = 8.314 J/K • mol)

Correct AnswerverifiedShow Answer

Which one of the following involves ion-dipole interactions?

Correct AnswerverifiedShow Answer

Which one of the following crystallizes in a metallic lattice?

Correct AnswerverifiedShow Answer

Use the graph of vapor pressure to determine the normal boiling point of O2.

Correct AnswerverifiedShow Answer

The strongest intermolecular interactions between hydrogen fluoride (HF) molecules arise from

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.liquid b.solid,liquid,and gas c.C is t...View AnswerShow Answer

Based on the phase diagram of a pure substance given below,what change of state occurs as the substance changes from point C to point D?

Correct AnswerverifiedShow Answer

What is defined as the number of atoms surrounding an atom in a crystal lattice and indicates how tightly the atoms are packed together?

Correct AnswerverifiedShow Answer

Vanadium crystallizes in a body-centered cubic lattice,and the length of the edge of a unit cell is 305 pm.What is the density of V?

Correct AnswerverifiedShow Answer

Which one of the following pure substance has both dispersion forces and dipole-dipole forces?

Correct AnswerverifiedShow Answer

Which substance has the highest vapor pressure at room temperature?

Correct AnswerverifiedShow Answer

______________ is the name given to the phase change from a solid directly to a gas.

Correct AnswerverifiedShow Answer

Octane,C8H18,boils at 125°C,whereas water boils at 100°C.This information suggests that the dispersion forces in nonpolar octane molecules are stronger than the dispersion forces and hydrogen bonding in water.

Correct AnswerverifiedShow Answer

Which has the highest surface tension at a given temperature?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

Use the graph of vapor pressure to determine the normal boiling point of O₂.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
a.liquid b.solid,liquid,and gas c.C is t...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Octane,C₈H₁₈,boils at 125°C,whereas water boils at 100°C.This information suggests that the dispersion forces in nonpolar octane molecules are stronger than the dispersion forces and hydrogen bonding in water.

Correct Answer
verified

Correct Answer
verified