Question 1

An unknown hydrate of zinc sulfate,ZnSO₄ • XH₂O,is heated to give 43.8% water.What is the water of crystallization (X)for the hydrate?

Accepted Answer

A) 1 
B) 4 
C) 6 
D) 7 
E) 10 
A) 1 
B) 4 
C) 6 
D) 7 
E) 10

Question 2

Consider the following liquids with similar molar masses.Predict which liquid has the highest boiling point based only on vapor pressure data.

Accepted Answer

A) pentane (vapor pressure @ 20 °C = 430 mm Hg) 
B) methyl acetate (vapor pressure @ 20 °C = 205 mm Hg) 
C) butyl alcohol (vapor pressure @ 20 °C = 6 mm Hg) 
D) propyl chloride (vapor pressure @ 20 °C = 300 mm Hg) 
E) ethyl ether (vapor pressure @ 20 °C = 450 mm Hg) 
A) pentane (vapor pressure @ 20 °C = 430 mm Hg) 
B) methyl acetate (vapor pressure @ 20 °C = 205 mm Hg) 
C) butyl alcohol (vapor pressure @ 20 °C = 6 mm Hg) 
D) propyl chloride (vapor pressure @ 20 °C = 300 mm Hg) 
E) ethyl ether (vapor pressure @ 20 °C = 450 mm Hg)

Question 3

The vapor pressure of ethanol is 360 mm Hg at 60 °C;600 mm Hg at 72 °C;760mm Hg at 78 °C;810 mm Hg at 80 °C;1190 mm Hg at 90 °C.What is the normal boiling point of ethanol?

Accepted Answer

A) 60 °C 
B) 72 °C 
C) 78 °C 
D) 80 °C 
E) 90 °C 
A) 60 °C 
B) 72 °C 
C) 78 °C 
D) 80 °C 
E) 90 °C

Question 4

What is the chemical formula for sodium carbonate decahydrate?

Accepted Answer

A) NaC₂H₃O₂ • 10H₂O 
B) Na₂CO₃ • 4H₂O 
C) Na₂CO₃ • 10H₂O 
D) NaHCO₃ • H₂O 
E) NaHCO₃ • 10H₂O 
A) NaC₂H₃O₂ • 10H₂O 
B) Na₂CO₃ • 4H₂O 
C) Na₂CO₃ • 10H₂O 
D) NaHCO₃ • H₂O 
E) NaHCO₃ • 10H₂O

Question 5

Complete the following chemical reaction and indicate the product(s). H₂(g)+ O₂(g)

Accepted Answer

A) H + O 
B) H₂ + O₂ 
C) H₂ + O₃ 
D) H₂O 
E) H₂O₂ 
A) H + O 
B) H₂ + O₂ 
C) H₂ + O₃ 
D) H₂O 
E) H₂O₂

Question 6

Which of the following is an observed property of solids?

Accepted Answer

A) Solids have a rigid shape and variable volume. 
B) Solids always have crystalline structures. 
C) Solids compress and expand significantly. 
D) Solids are usually less dense than liquids. 
E) none of the above 
A) Solids have a rigid shape and variable volume. 
B) Solids always have crystalline structures. 
C) Solids compress and expand significantly. 
D) Solids are usually less dense than liquids. 
E) none of the above

Question 7

What is the term for the pressure exerted by vapor molecules above a liquid in a closed container when the rates of vaporization and condensation are equal?

Accepted Answer

A) atmospheric pressure 
B) gas pressure 
C) partial pressure 
D) vapor pressure 
E) none of the above 
A) atmospheric pressure 
B) gas pressure 
C) partial pressure 
D) vapor pressure 
E) none of the above

Question 8

What is the term for the amount of energy required to raise one gram of any substance one degree on the Celsius scale?

Accepted Answer

A) calorie 
B) heat 
C) specific heat 
D) joule 
E) none of the above 
A) calorie 
B) heat 
C) specific heat 
D) joule 
E) none of the above

Question 9

Consider the following liquids with similar molar masses.Predict which has the strongest intermolecular attraction based only on boiling point data.

Accepted Answer

A) butyl alcohol (Bp @ 760 mm Hg = 117 °
C)  
B) ethyl ether (Bp @ 760 mm Hg = 35 °
C)  
C) pentane (Bp @ 760 mm Hg = 36 °
C)  
D) propionic acid (Bp @ 760 mm Hg = 141 °
C)  
E) propyl chloride (Bp @ 760 mm Hg = 47 °
C)  
A) butyl alcohol (Bp @ 760 mm Hg = 117 °
C)  
B) ethyl ether (Bp @ 760 mm Hg = 35 °
C)  
C) pentane (Bp @ 760 mm Hg = 36 °
C)  
D) propionic acid (Bp @ 760 mm Hg = 141 °
C)  
E) propyl chloride (Bp @ 760 mm Hg = 47 °
C)

Question 10

What is the term for the overall direction of partial negative charge in a molecule having two or more dipoles?

Accepted Answer

A) charge dipole 
B) directional dipole 
C) electron dipole 
D) net dipole 
E) none of the above 
A) charge dipole 
B) directional dipole 
C) electron dipole 
D) net dipole 
E) none of the above

Question 11

Predict the physical state of krypton at -155 °C (Mp = -157 °C,Bp = -152 °C)and normal atmospheric pressure.

Accepted Answer

A) solid 
B) liquid 
C) gas 
D) solid and liquid 
E) liquid and gas 
A) solid 
B) liquid 
C) gas 
D) solid and liquid 
E) liquid and gas

Question 12

Complete the following chemical reaction and indicate the products. Na3PO₄ • 10H₂O(s)

Accepted Answer

A) Na3PO₃ and H₂ 
B) Na3PO₄ and O₂ 
C) Na3PO₃ and H₂O 
D) Na3PO₄ and H₂O 
E) Na3PO₄,H₂,and O₂ 
A) Na3PO₃ and H₂ 
B) Na3PO₄ and O₂ 
C) Na3PO₃ and H₂O 
D) Na3PO₄ and H₂O 
E) Na3PO₄,H₂,and O₂

Question 13

Based only on intermolecular attraction,predict which of the following liquids has the highest viscosity.

Accepted Answer

A) CH₃-CO-OH 
B) CH₃-CH₂-O-CH₃ 
C) CH₃-CH₂-S-CH₃ 
D) CH₃-CH₂-CH₂-Cl 
E) CH₃-CH₂-CH₂-CH₂-CH₃ 
A) CH₃-CO-OH 
B) CH₃-CH₂-O-CH₃ 
C) CH₃-CH₂-S-CH₃ 
D) CH₃-CH₂-CH₂-Cl 
E) CH₃-CH₂-CH₂-CH₂-CH₃

Question 14

Consider the following liquids with similar molar masses.Predict which liquid has the weakest intermolecular attraction based on viscosity data.

Accepted Answer

A) butyl alcohol (viscosity @ 20 °C = 2.95 centipoise) 
B) ethyl ether (viscosity @ 20 °C = 0.23 centipoise) 
C) ethyl formate (viscosity @ 20 °C = 0.40 centipoise) 
D) propionic acid (viscosity @ 20 °C = 1.10 centipoise) 
E) propyl chloride (viscosity @ 20 °C = 0.35 centipoise) 
A) butyl alcohol (viscosity @ 20 °C = 2.95 centipoise) 
B) ethyl ether (viscosity @ 20 °C = 0.23 centipoise) 
C) ethyl formate (viscosity @ 20 °C = 0.40 centipoise) 
D) propionic acid (viscosity @ 20 °C = 1.10 centipoise) 
E) propyl chloride (viscosity @ 20 °C = 0.35 centipoise)

Question 15

What is the term for the resistance of a liquid to flow?

Accepted Answer

A) dipole attraction 
B) dispersion forces 
C) surface tension 
D) viscosity 
E) none of the above 
A) dipole attraction 
B) dispersion forces 
C) surface tension 
D) viscosity 
E) none of the above

Question 16

Which of the following accounts for the unusually high boiling point of water?

Accepted Answer

A) the density of water 
B) the hydrogen bonds in water 
C) the molar mass of water 
D) the specific heat of water 
E) the surface tension in water 
A) the density of water 
B) the hydrogen bonds in water 
C) the molar mass of water 
D) the specific heat of water 
E) the surface tension in water

Question 17

Predict the physical state of ammonia at -95 °C (Mp = -77 °C,Bp = -33 °C)and normal atmospheric pressure.

Accepted Answer

A) solid 
B) liquid 
C) gas 
D) solid and liquid 
E) liquid and gas 
A) solid 
B) liquid 
C) gas 
D) solid and liquid 
E) liquid and gas

Question 18

Based only on intermolecular attraction,predict which of the following liquids has the highest vapor pressure.

Accepted Answer

A) CH₃-CO-OH 
B) CH₃-CH₂-O-CH₃ 
C) CH₃-CH₂-S-CH₃ 
D) CH₃-CH₂-CH₂-Cl 
E) CH₃-CH₂-CH₂-CH₂-CH₃ 
A) CH₃-CO-OH 
B) CH₃-CH₂-O-CH₃ 
C) CH₃-CH₂-S-CH₃ 
D) CH₃-CH₂-CH₂-Cl 
E) CH₃-CH₂-CH₂-CH₂-CH₃

Question 19

How many net dipoles are in a water molecule?

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
E) none of the above 
A) 0 
B) 1 
C) 2 
D) 3 
E) none of the above

Question 20

Which of the following is an example of a metallic crystalline solid?

Accepted Answer

A) charcoal,C 
B) diamond,C 
C) graphite,C 
D) all of the above 
E) none of the above 
A) charcoal,C 
B) diamond,C 
C) graphite,C 
D) all of the above 
E) none of the above

Exam 11: Liquids and Solids

An unknown hydrate of zinc sulfate,ZnSO₄ • XH₂O,is heated to give 43.8% water.What is the water of crystallization (X)for the hydrate?

Consider the following liquids with similar molar masses.Predict which liquid has the highest boiling point based only on vapor pressure data.

The vapor pressure of ethanol is 360 mm Hg at 60 °C;600 mm Hg at 72 °C;760mm Hg at 78 °C;810 mm Hg at 80 °C;1190 mm Hg at 90 °C.What is the normal boiling point of ethanol?

What is the chemical formula for sodium carbonate decahydrate?

Complete the following chemical reaction and indicate the product(s). H₂(g)+ O₂(g)

Which of the following is an observed property of solids?

What is the term for the pressure exerted by vapor molecules above a liquid in a closed container when the rates of vaporization and condensation are equal?

What is the term for the amount of energy required to raise one gram of any substance one degree on the Celsius scale?

Consider the following liquids with similar molar masses.Predict which has the strongest intermolecular attraction based only on boiling point data.

What is the term for the overall direction of partial negative charge in a molecule having two or more dipoles?

Predict the physical state of krypton at -155 °C (Mp = -157 °C,Bp = -152 °C)and normal atmospheric pressure.

Complete the following chemical reaction and indicate the products. Na3PO₄ • 10H₂O(s)

Based only on intermolecular attraction,predict which of the following liquids has the highest viscosity.

Consider the following liquids with similar molar masses.Predict which liquid has the weakest intermolecular attraction based on viscosity data.

What is the term for the resistance of a liquid to flow?

Which of the following accounts for the unusually high boiling point of water?

Predict the physical state of ammonia at -95 °C (Mp = -77 °C,Bp = -33 °C)and normal atmospheric pressure.

Based only on intermolecular attraction,predict which of the following liquids has the highest vapor pressure.

How many net dipoles are in a water molecule?

Which of the following is an example of a metallic crystalline solid?

Introduction to Chemistry

The Metric System

Matter and Energy

Models of the Atom

The Periodic Table

Language of Chemistry

Chemical Reactions

The Mole Concept

Chemical Equation Calculations

Gases

Chemical Bonding

Solutions

Acids and Bases

Advanced Problem Solving

Chemical Equilibrium

Oxidation and Reduction

Nuclear Chemistry

Organic Chemistry

Biochemistry

Interlude: Prerequisite Science Skills

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