Question 1

Select the pair of substances which has the one with the higher equilibrium vapor pressure at a given temperature listed first.

Accepted Answer

A) H2O, HCl 
B) CH3OH, CH4  
C) CH3CH2CH2OH, CH3COCH3  
D) AsH3, PH3  
E) Cl2, Br2  
A) H2O, HCl 
B) CH3OH, CH4  
C) CH3CH2CH2OH, CH3COCH3  
D) AsH3, PH3  
E) Cl2, Br2

Question 2

The molecular-level diagram of the substance shown must represent a liquid, since the atoms are not very close to one another.

Accepted Answer

A) True 
 B)False

Question 3

The forces that hold CaF2 together in the solid state are:

Accepted Answer

A) ionic bonds. 
B) dipole-dipole forces. 
C) London dispersion forces only. 
D) covalent bonds. 
E) attractions between nuclei and delocalized valence electrons. 
A) ionic bonds. 
B) dipole-dipole forces. 
C) London dispersion forces only. 
D) covalent bonds. 
E) attractions between nuclei and delocalized valence electrons.

Question 4

Which of the molecular-level images in the figure shows the liquid and vapor phases in equilibrium in a closed container?

Accepted Answer

A) I, II, and III 
B) none of the images 
C) I 
D) V 
E) V and VI 
A) I, II, and III 
B) none of the images 
C) I 
D) V 
E) V and VI

Question 5

The pictured change of state occurs at constant temperature even though heat is being added.Where does this change of state occur on the cooling curve?

Accepted Answer

A) AB 
B) BC 
C) CD 
D) DE 
E) EF 
A) AB 
B) BC 
C) CD 
D) DE 
E) EF

Question 6

A solid substance has a very high melting point, is very hard, and is a nonconductor whether molten or solid.This substance is probably a(n)________ solid.

Accepted Answer

A) metallic 
B) ionic 
C) network 
D) nonpolar molecular 
E) polar molecular 
A) metallic 
B) ionic 
C) network 
D) nonpolar molecular 
E) polar molecular

Question 7

Calculate the amount of heat energy required to convert 27.5 g of water at 62.5 $\degree$C to steam at 124.0 $\degree$C.(Cwater = 4.18 J/g $\degree$C; Cice = 2.03 J/goC; Csteam = 2.02 J/g $\degree$C; molar heat of fusion of ice = 6.01 x 103 J/mol; molar heat of vaporization of liquid water = 4.07 x 104 J/mol)

Accepted Answer

A) 6.15 x 104 kJ 
B) 1.23 x 102 kJ 
C) 4.31 x 102 kJ 
D) 31.8 kJ 
E) 1.33 kJ 
A) 6.15 x 104 kJ 
B) 1.23 x 102 kJ 
C) 4.31 x 102 kJ 
D) 31.8 kJ 
E) 1.33 kJ

Select the pair of substances which has the one with the higher equilibrium vapor pressure at a given temperature listed first.

The molecular-level diagram of the substance shown must represent a liquid, since the atoms are not very close to one another.

The forces that hold CaF₂ together in the solid state are:

Which of the molecular-level images in the figure shows the liquid and vapor phases in equilibrium in a closed container?

The pictured change of state occurs at constant temperature even though heat is being added.Where does this change of state occur on the cooling curve?

A solid substance has a very high melting point, is very hard, and is a nonconductor whether molten or solid.This substance is probably a(n)________ solid.

Matter and Energy

Atoms, Ions, and the Periodic Table

Chemical Compounds

Chemical Composition

Chemical Reactions and Equations

Quantities in Chemical Reactions

Electron Structure of the Atom

Chemical Bonding

The Gaseous State

Solutions

Reaction Rates and Chemical Equilibrium

Acids and Bases

Oxidation-Reduction Reactions

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

Exam 10: The Liquid and Solid States

Select the pair of substances which has the one with the higher equilibrium vapor pressure at a given temperature listed first.

The molecular-level diagram of the substance shown must represent a liquid, since the atoms are not very close to one another.

The forces that hold CaF2 together in the solid state are:

Which of the molecular-level images in the figure shows the liquid and vapor phases in equilibrium in a closed container?

The pictured change of state occurs at constant temperature even though heat is being added.Where does this change of state occur on the cooling curve?

A solid substance has a very high melting point, is very hard, and is a nonconductor whether molten or solid.This substance is probably a(n)________ solid.

Matter and Energy

Atoms, Ions, and the Periodic Table

Chemical Compounds

Chemical Composition

Chemical Reactions and Equations

Quantities in Chemical Reactions

Electron Structure of the Atom

Chemical Bonding

The Gaseous State

Solutions

Reaction Rates and Chemical Equilibrium

Acids and Bases

Oxidation-Reduction Reactions

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

The forces that hold CaF₂ together in the solid state are: