Question 1

Which one of the following is the strongest intermolecular force experienced by noble gases?

Accepted Answer

A)  polar covalent bonds 
B)  hydrogen bonding 
C)  London dispersion forces 
D)  ionic bonding 
E)  dipole-dipole interactions 
A)  polar covalent bonds 
B)  hydrogen bonding 
C)  London dispersion forces 
D)  ionic bonding 
E)  dipole-dipole interactions

Question 2

Choose the correct statement about the diagram below.

Accepted Answer

A)  The diagram could represent the phase diagram of CO2. 
B)  The diagram shows the triple point above 1 atm pressure. 
C)  The diagram is qualitatively correct for water. 
D)  The diagram shows that the melting point of the solid increases with increasing pressure. 
E)  None of these statements is correct. 
A)  The diagram could represent the phase diagram of CO2. 
B)  The diagram shows the triple point above 1 atm pressure. 
C)  The diagram is qualitatively correct for water. 
D)  The diagram shows that the melting point of the solid increases with increasing pressure. 
E)  None of these statements is correct.

Question 3

A material is made from Al, Ga, and As. The mole fractions of these elements are 0.25, 0.26, and 0.49, respectively. This material would be

Accepted Answer

A)  an insulator. 
B)  an n-type semiconductor. 
C)  a metallic conductor because Al is present. 
D)  a p-type semiconductor. 
E)  none of these 
A)  an insulator. 
B)  an n-type semiconductor. 
C)  a metallic conductor because Al is present. 
D)  a p-type semiconductor. 
E)  none of these

Question 4

A crystal of NaCl is

Accepted Answer

A)  hard, high-melting, and a good electrical conductor. 
B)  soft, low-melting, and a good electrical conductor. 
C)  hard, high-melting, and a poor electrical conductor. 
D)  soft, high-melting, and a poor electrical conductor. 
E)  soft, low-melting, and a poor electrical conductor. 
A)  hard, high-melting, and a good electrical conductor. 
B)  soft, low-melting, and a good electrical conductor. 
C)  hard, high-melting, and a poor electrical conductor. 
D)  soft, high-melting, and a poor electrical conductor. 
E)  soft, low-melting, and a poor electrical conductor.

Question 5

The molar volume of a certain form of solid lead is 18 cmS1U1P13S1S1P0/mol. Assuming cubic closest-packed structure, determine the following.
-The radius of a Pb atom

Accepted Answer

A)  1740 pm 
B)  17.4 pm 
C)  174 pm 
D)  1.74 pm 
E)  none of these 
A)  1740 pm 
B)  17.4 pm 
C)  174 pm 
D)  1.74 pm 
E)  none of these

Question 6

Below is a phase diagram for compound X. What is the normal boiling point of X is most likely to be?

Accepted Answer

A)  0° C 
B)  73° C 
C)  15° C 
D)  47° C 
E)  18° C 
A)  0° C 
B)  73° C 
C)  15° C 
D)  47° C 
E)  18° C

Question 7

Which of the following compounds has the lowest boiling point?

Accepted Answer

A)  CH4 
B)  C2H6 
C)  C5H12 
D)  C3H8 
E)  C4H10 
A)  CH4 
B)  C2H6 
C)  C5H12 
D)  C3H8 
E)  C4H10

Question 8

Which substance involves no intermolecular forces except London dispersion forces?

Accepted Answer

A)  NaCl 
B)  H2 
C)  HCl 
D)  H2S 
E)  Na 
A)  NaCl 
B)  H2 
C)  HCl 
D)  H2S 
E)  Na

Question 9

Identify the major attractive force in H2S.

Accepted Answer

A)  London dispersion forces 
B)  hydrogen bonding 
C)  ionic bonding 
D)  dipole-dipole interactions 
E)  none of these 
A)  London dispersion forces 
B)  hydrogen bonding 
C)  ionic bonding 
D)  dipole-dipole interactions 
E)  none of these

Question 10

Consider an ionic compound CxAy where the anions (A) are in a body-centered cubic arrangement and the cations (C) are located in all of the faces of the cubic unit cell.
A. What is the empirical formula of the salt?
B. If the edge length of the unit cell is 5.00 × 10 cm and the molar masses of C and A are 50.0 g/mol and 100.0 g/mol, respectively, calculate the density of CxAy.
C. If the ionic radius of A is 200. pm, estimate the ionic radius of C.

Accepted Answer

A. C₃A₂B.

Question 11

Doping Se with As would produce a(n) __________ semiconductor with __________ conductivity compared to pure Se.

Accepted Answer

A)  n-type, increased 
B)  p-type, increased 
C)  n-type, decreased 
D)  intrinsic, identical 
E)  p-type, decreased 
A)  n-type, increased 
B)  p-type, increased 
C)  n-type, decreased 
D)  intrinsic, identical 
E)  p-type, decreased

Question 12

Make a sketch to show the hydrogen bonding between two acetic acid molecules (HC2H3O2).

Accepted Answer

Question 13

A(n) _____ is a computer-controlled instrument used for carrying out the X-ray analysis of crystals.​

Accepted Answer

A)  ​cathetometer 
B)  ​spectrometer 
C)  ​actinometer 
D)  ​tacheometer 
E)  ​diffractometer 
A)  ​cathetometer 
B)  ​spectrometer 
C)  ​actinometer 
D)  ​tacheometer 
E)  ​diffractometer

Question 14

100. g of ice at 0°C is added to 300.0 g of water at 60°C. Assuming no transfer of heat to the surroundings, what is the temperature of the liquid water after all the ice has melted?

Accepted Answer

The answer of 100. g of ice at 0°C is...

Question 15

Which of the following is the most polarizable?

Accepted Answer

A)  Ar 
B)  He 
C)  Kr 
D)  Ne 
E)  Xe 
A)  Ar 
B)  He 
C)  Kr 
D)  Ne 
E)  Xe

Question 16

Which of the following substances would you expect to have the lowest boiling point?

Accepted Answer

A)  potassium nitrate, KNO3 
B)  sodium 
C)  ethane, C2H6 
D)  glycerine, C3H5(OH)3 
E)  diamond 
A)  potassium nitrate, KNO3 
B)  sodium 
C)  ethane, C2H6 
D)  glycerine, C3H5(OH)3 
E)  diamond

Question 17

Which of the following processes must exist in equilibrium with the condensation process when a measurement of vapor pressure is made?

Accepted Answer

A)  evaporation 
B)  fusion 
C)  sublimation 
D)  boiling 
E)  none of these 
A)  evaporation 
B)  fusion 
C)  sublimation 
D)  boiling 
E)  none of these

Question 18

Identify the true statement(s) of the different types of holes in closest packed structures.
1. Trigonal holes are formed by three spheres in the same layer.
2. Tetrahedral holes are formed when a sphere sits in the dimple of four spheres in an adjacent layer.
3. Octahedral holes are formed between two sets of three spheres in adjoining layers of the closest packed structures.

Accepted Answer

A)  ​1 only 
B)  ​2 only 
C)  ​​3 only 
D)  ​1 and 3 
E)  ​1 and 2 
A)  ​1 only 
B)  ​2 only 
C)  ​​3 only 
D)  ​1 and 3 
E)  ​1 and 2

Question 19

Based on intermolecular forces, which organic compound should have the highest boiling point?

Accepted Answer

A)  Ethanol   
B)  Propane   
C)  Acetone   
D)  Propanol   
E)  Hexane   
A)  Ethanol   
B)  Propane   
C)  Acetone   
D)  Propanol   
E)  Hexane

Question 20

Identify the major attractive force in HF.

Accepted Answer

A)  dipole-dipole interactions 
B)  ionic bonding 
C)  hydrogen bonding 
D)  London dispersion forces 
E)  none of these 
A)  dipole-dipole interactions 
B)  ionic bonding 
C)  hydrogen bonding 
D)  London dispersion forces 
E)  none of these

Which one of the following is the strongest intermolecular force experienced by noble gases?

Choose the correct statement about the diagram below.

A material is made from Al, Ga, and As. The mole fractions of these elements are 0.25, 0.26, and 0.49, respectively. This material would be

A crystal of NaCl is

The molar volume of a certain form of solid lead is 18 cm³/mol. Assuming cubic closest-packed structure, determine the following. -The radius of a Pb atom

Below is a phase diagram for compound X. What is the normal boiling point of X is most likely to be?

Which of the following compounds has the lowest boiling point?

Which substance involves no intermolecular forces except London dispersion forces?

Identify the major attractive force in H₂S.

Doping Se with As would produce a(n) semiconductor with conductivity compared to pure Se.

Make a sketch to show the hydrogen bonding between two acetic acid molecules (HC₂H₃O₂).

A(n) _____ is a computer-controlled instrument used for carrying out the X-ray analysis of crystals.

100. g of ice at 0°C is added to 300.0 g of water at 60°C. Assuming no transfer of heat to the surroundings, what is the temperature of the liquid water after all the ice has melted?

Which of the following is the most polarizable?

Which of the following substances would you expect to have the lowest boiling point?

Which of the following processes must exist in equilibrium with the condensation process when a measurement of vapor pressure is made?

Based on intermolecular forces, which organic compound should have the highest boiling point?

Identify the major attractive force in HF.

Atoms, Molecules, and Ions

Stoichiometry

Types of Chemical Reactions and Solution Stoichiometry

Gases

Chemical Equilibrium

Acids and Bases

Applications of Aqueous Equilibria

Energy, Enthalpy, and Thermochemistry

Spontaneity, Entropy, and Free Energy

Electrochemistry

Quantum Mechanics and Atomic Theory

Bonding: General Concepts

Covalent Bonding: Orbitals

Chemical Kinetics

Properties of Solutions

The Representative Elements

Transition Metals and Coordination Chemistry

The Nucleus: a Chemists View

Organic and Biochemical Molecules

Filters

Exam 16: Liquids and Solids

Which one of the following is the strongest intermolecular force experienced by noble gases?

Choose the correct statement about the diagram below.

A material is made from Al, Ga, and As. The mole fractions of these elements are 0.25, 0.26, and 0.49, respectively. This material would be

A crystal of NaCl is

The molar volume of a certain form of solid lead is 18 cm3/mol. Assuming cubic closest-packed structure, determine the following. -The radius of a Pb atom

Below is a phase diagram for compound X. What is the normal boiling point of X is most likely to be?

Which of the following compounds has the lowest boiling point?

Which substance involves no intermolecular forces except London dispersion forces?

Identify the major attractive force in H2S.

Doping Se with As would produce a(n) __________ semiconductor with __________ conductivity compared to pure Se.

Make a sketch to show the hydrogen bonding between two acetic acid molecules (HC2H3O2).

A(n) _____ is a computer-controlled instrument used for carrying out the X-ray analysis of crystals.​

100. g of ice at 0°C is added to 300.0 g of water at 60°C. Assuming no transfer of heat to the surroundings, what is the temperature of the liquid water after all the ice has melted?

Which of the following is the most polarizable?

Which of the following substances would you expect to have the lowest boiling point?

Which of the following processes must exist in equilibrium with the condensation process when a measurement of vapor pressure is made?

Based on intermolecular forces, which organic compound should have the highest boiling point?

Identify the major attractive force in HF.

Atoms, Molecules, and Ions

Stoichiometry

Types of Chemical Reactions and Solution Stoichiometry

Gases

Chemical Equilibrium

Acids and Bases

Applications of Aqueous Equilibria

Energy, Enthalpy, and Thermochemistry

Spontaneity, Entropy, and Free Energy

Electrochemistry

Quantum Mechanics and Atomic Theory

Bonding: General Concepts

Covalent Bonding: Orbitals

Chemical Kinetics

Properties of Solutions

The Representative Elements

Transition Metals and Coordination Chemistry

The Nucleus: a Chemists View

Organic and Biochemical Molecules

Filters

The molar volume of a certain form of solid lead is 18 cm³/mol. Assuming cubic closest-packed structure, determine the following. -The radius of a Pb atom

Identify the major attractive force in H₂S.

Doping Se with As would produce a(n) semiconductor with conductivity compared to pure Se.

Make a sketch to show the hydrogen bonding between two acetic acid molecules (HC₂H₃O₂).

A(n) _____ is a computer-controlled instrument used for carrying out the X-ray analysis of crystals.