Question 1

Which substance would have the highest vapor pressure?

Accepted Answer

A) CH3CH2CH2CH3 
B) CH3CH2CH2CH2CH3 
C) CH3CH2CH2CH2CH2CH3 
D) CH3CH2CH2CH2CH2CH2CH3 
E) The vapor pressure is about the same for all of the listed molecules. 
A) CH3CH2CH2CH3 
B) CH3CH2CH2CH2CH3 
C) CH3CH2CH2CH2CH2CH3 
D) CH3CH2CH2CH2CH2CH2CH3 
E) The vapor pressure is about the same for all of the listed molecules.

Question 2

Which of these substances would have the weakest cohesive forces in combination with extremely high molecular mobility?

Accepted Answer

A) H2O(l) 
B) CH4(g) 
C) KCl(s) 
D) N2(l) 
E) Au(s) 
A) H2O(l) 
B) CH4(g) 
C) KCl(s) 
D) N2(l) 
E) Au(s)

Question 3

Which of these water treatment systems removes organic contaminants?

Accepted Answer

A) carbon filtering 
B) water softening 
C) reverse osmosis 
D) coagulation 
E) chlorination 
A) carbon filtering 
B) water softening 
C) reverse osmosis 
D) coagulation 
E) chlorination

Question 4

Which of these substances, existing as a liquid, contains hydrogen bonds?
I. NH3
II. H2O
III. C2H5OH
IV. CH 3CH3

Accepted Answer

A) I only 
B) II, III, and IV 
C) I and II 
D) II and III 
E) I, II, and III 
A) I only 
B) II, III, and IV 
C) I and II 
D) II and III 
E) I, II, and III

Question 5

Which substance would have the lowest vapor pressure?

Accepted Answer

A) CH3CH2CH2CH3 
B) CH3CH2CH2CH2CH3 
C) CH3CH2CH2CH2CH2CH3 
D) CH3CH2CH2CH2CH2CH2CH3 
E) The vapor pressure is about the same for all of the listed molecules. 
A) CH3CH2CH2CH3 
B) CH3CH2CH2CH2CH3 
C) CH3CH2CH2CH2CH2CH3 
D) CH3CH2CH2CH2CH2CH2CH3 
E) The vapor pressure is about the same for all of the listed molecules.

Question 6

Substance A contains stronger cohesive forces than substance B. Which is true?

Accepted Answer

A) Substance A will have a higher boiling point and higher vapor pressure than substance B. 
B) Substance A will have a lower boiling point and lower vapor pressure than substance B. 
C) Substance A will have a lower boiling point and higher vapor pressure than substance B. 
D) Substance A will have a higher boiling point and lower vapor pressure than substance B. 
E) Cannot tell from the given information. 
A) Substance A will have a higher boiling point and higher vapor pressure than substance B. 
B) Substance A will have a lower boiling point and lower vapor pressure than substance B. 
C) Substance A will have a lower boiling point and higher vapor pressure than substance B. 
D) Substance A will have a higher boiling point and lower vapor pressure than substance B. 
E) Cannot tell from the given information.

Question 7

Which statement (s)about dispersion forces is \are incorrect ?

Accepted Answer

A) Dispersion forces are sometimes called London forces. 
B) Dispersion forces are the weakest of all cohesive forces. 
C) Dispersion forces increase with an increase in molar mass. 
D) Dispersion forces result in the establishment of a permanent dipole within a molecule. 
E) All of these statements are correct. 
A) Dispersion forces are sometimes called London forces. 
B) Dispersion forces are the weakest of all cohesive forces. 
C) Dispersion forces increase with an increase in molar mass. 
D) Dispersion forces result in the establishment of a permanent dipole within a molecule. 
E) All of these statements are correct.

Question 8

Which of the statements about liquids is incorrect ?

Accepted Answer

A) Liquids are highly disordered when compared with solids. 
B) Liquids have high molecular motion when compared with solids. 
C) Liquids have a relatively fixed shape when compared with solids. 
D) Liquids have strong molecular attractions when compared with gases. 
E) Liquids have a relatively low compressibility when compared with gases. 
A) Liquids are highly disordered when compared with solids. 
B) Liquids have high molecular motion when compared with solids. 
C) Liquids have a relatively fixed shape when compared with solids. 
D) Liquids have strong molecular attractions when compared with gases. 
E) Liquids have a relatively low compressibility when compared with gases.

Question 9

Which of these statements about water is correct ?

Accepted Answer

A) Water has a high boiling point. 
B) Water expands when it freezes. 
C) Water is the most abundant liquid on the planet. 
D) Water molecules form  hydrogen bonds. 
E) All of these are correct statements. 
A) Water has a high boiling point. 
B) Water expands when it freezes. 
C) Water is the most abundant liquid on the planet. 
D) Water molecules form  hydrogen bonds. 
E) All of these are correct statements.

Question 10

A 5% acetic acid solution contains ____ grams of acetic acid per ____ grams of solution.

Accepted Answer

A) 5, 10 
B) 95, 100 
C) 100, 500 
D) 5, 500 
E) 50, 1000 
A) 5, 10 
B) 95, 100 
C) 100, 500 
D) 5, 500 
E) 50, 1000

Which substance would have the highest vapor pressure?

Which of these substances would have the weakest cohesive forces in combination with extremely high molecular mobility?

Which of these water treatment systems removes organic contaminants?

Which of these substances, existing as a liquid, contains hydrogen bonds? I. NH₃ II. H₂O III. C₂H₅OH IV. CH ₃CH₃

Which substance would have the lowest vapor pressure?

Substance A contains stronger cohesive forces than substance B. Which is true?

Which statement (s)about dispersion forces is \are incorrect ?

Which of the statements about liquids is incorrect ?

Which of these statements about water is correct ?

A 5% acetic acid solution contains grams of acetic acid per grams of solution.

Molecular Reasons

The Chemists Toolbox

Atoms and Elements

Molecules, Compounds, and Chemical Reactions

Chemical Bonding

Organic Chemistry

Light and Color

Nuclear Chemistry

Energy for Today

Energy for Tomorrow: Solar and Other Renewable Energy Sources

The Air Around Us

Acids and Bases: the Molecules Responsible for Sour and Bitter

Oxidation and Reduction

The Chemistry of Household Products

Biochemistry and Biotechnology

Drugs and Medicine: Healing, Helping, and Hurting

The Chemistry of Food

Nanotechnology

Filters

Exam 12: The Liquids and Solids Around Us: Especially Water

Which substance would have the highest vapor pressure?

Which of these substances would have the weakest cohesive forces in combination with extremely high molecular mobility?

Which of these water treatment systems removes organic contaminants?

Which of these substances, existing as a liquid, contains hydrogen bonds? I. NH3 II. H2O III. C2H5OH IV. CH 3CH3

Which substance would have the lowest vapor pressure?

Substance A contains stronger cohesive forces than substance B. Which is true?

Which statement (s)about dispersion forces is \are incorrect ?

Which of the statements about liquids is incorrect ?

Which of these statements about water is correct ?

A 5% acetic acid solution contains ____ grams of acetic acid per ____ grams of solution.

Molecular Reasons

The Chemists Toolbox

Atoms and Elements

Molecules, Compounds, and Chemical Reactions

Chemical Bonding

Organic Chemistry

Light and Color

Nuclear Chemistry

Energy for Today

Energy for Tomorrow: Solar and Other Renewable Energy Sources

The Air Around Us

Acids and Bases: the Molecules Responsible for Sour and Bitter

Oxidation and Reduction

The Chemistry of Household Products

Biochemistry and Biotechnology

Drugs and Medicine: Healing, Helping, and Hurting

The Chemistry of Food

Nanotechnology

Filters

Which of these substances, existing as a liquid, contains hydrogen bonds? I. NH₃ II. H₂O III. C₂H₅OH IV. CH ₃CH₃

A 5% acetic acid solution contains grams of acetic acid per grams of solution.