Question 1

What is the concentration (M)of HCl in a solution that is prepared by dissolving 25.5 g of HCl in   of water? (Assume volume does not change after adding HCl.)

Accepted Answer

A) 1.28 
B) 0.0350 
C) 35.0 
D) 3.50 × 10-5 
E) 14.0 
A) 1.28 
B) 0.0350 
C) 35.0 
D) 3.50 × 10-5 
E) 14.0

Question 2

What is the mass % of ammonium chloride in a 1.73 M ammonium chloride aqueous solution at 20 °C? Density of the solution is

Accepted Answer

A) 1.85 
B) 3.31 
C) 1.68 
D) 0.594 
E) 9.00 
A) 1.85 
B) 3.31 
C) 1.68 
D) 0.594 
E) 9.00

Question 3

Adding a nonvolatile solute to a solution decreases the vapor pressure of the solution.

Accepted Answer

A) True 
 B)False

Question 4

A solution is prepared by adding 40.00 g of lactose (milk sugar)to 110.0 g of water at   The partial pressure of water above the solution is ________ torr.The vapor pressure of pure water at 55 °C is 118.0 torr.The MW of lactose is

Accepted Answer

A) 2.216 
B) 125.5 
C) 225.9 
D) 115.8 
E) 86.5 
A) 2.216 
B) 125.5 
C) 225.9 
D) 115.8 
E) 86.5

Question 5

Which one of the following substances is more likely to dissolve in benzene (C6H6)?

Accepted Answer

A) CH3CH2OH 
B) NH3 
C) NaCl 
D) CCl4 
E) HBr 
A) CH3CH2OH 
B) NH3 
C) NaCl 
D) CCl4 
E) HBr

Question 6

What is the mole fraction of hydrochloric acid in a 7.20% (by mass)aqueous solution?

Accepted Answer

A) 0.0383 
B) 0.0739 
C) 0.0185 
D) 0.0369 
E) The density of the solution is needed to solve the problem. 
A) 0.0383 
B) 0.0739 
C) 0.0185 
D) 0.0369 
E) The density of the solution is needed to solve the problem.

Question 7

Which of the following substances is more likely to dissolve in CH3OH?

Accepted Answer

A) CCl4 
B) Kr 
C) N2 
D) CH3CH2OH 
E) H2 
A) CCl4 
B) Kr 
C) N2 
D) CH3CH2OH 
E) H2

Question 8

A solution is prepared by dissolving 2.60 g of a strong electrolyte (formula weight = 101 g/mol)in enough water to make 1.00 L of solution.The osmotic pressure of the solution is 1.25 atm at 25.0 °C.What is the van't Hoff factor (i)for the unknown solute?

Accepted Answer

A) 0 
B) 0.99 
C) 1.98 
D) 2.98 
E) 0.630 
A) 0 
B) 0.99 
C) 1.98 
D) 2.98 
E) 0.630

Question 9

When argon is placed in a container of neon,the argon spontaneously disperses throughout the neon because ________.

Accepted Answer

A) of the large attractive forces between argon and neon atoms 
B) of hydrogen bonding 
C) a decrease in energy occurs when the two mix 
D) the dispersion of argon atoms produces an increase in disorder 
E) of solvent-solute interactions 
A) of the large attractive forces between argon and neon atoms 
B) of hydrogen bonding 
C) a decrease in energy occurs when the two mix 
D) the dispersion of argon atoms produces an increase in disorder 
E) of solvent-solute interactions

Question 10

Which one of the following vitamins is water soluble?

Accepted Answer

A) A 
B) B 
C) K 
D) D 
E) E 
A) A 
B) B 
C) K 
D) D 
E) E

Question 11

What is the osmotic pressure (in atm)of a 0.0255 M NaCl solution at 25.0 °C?

Accepted Answer

The answer of What is the osmotic pressure (in atm)of...

Question 12

What is the molal concentration of potassium bromide in a solution prepared by dissolving 2.27 g of potassium bromide in 897 g of water?

Accepted Answer

A) 2.46 
B) 0.0213 
C) 0.0167 
D) 0.0000207 
E) 0.0186 
A) 2.46 
B) 0.0213 
C) 0.0167 
D) 0.0000207 
E) 0.0186

Question 13

Which of the following liquids will have the highest freezing point?

Accepted Answer

A) pure H2O 
B) aqueous glucose (0.60 m) 
C) aqueous sucrose (0.60 m) 
D) aqueous FeI3 (0.24 m) 
E) aqueous KF (0.50 m) 
A) pure H2O 
B) aqueous glucose (0.60 m) 
C) aqueous sucrose (0.60 m) 
D) aqueous FeI3 (0.24 m) 
E) aqueous KF (0.50 m)

Question 14

The phrase "like dissolves like" refers to the fact that ________.

Accepted Answer

A) gases can only dissolve other gases 
B) polar solvents dissolve polar solutes and nonpolar solvents dissolve nonpolar solutes 
C) solvents can only dissolve solutes of similar molar mass 
D) condensed phases can only dissolve other condensed phases 
E) polar solvents dissolve nonpolar solutes and vice versa 
A) gases can only dissolve other gases 
B) polar solvents dissolve polar solutes and nonpolar solvents dissolve nonpolar solutes 
C) solvents can only dissolve solutes of similar molar mass 
D) condensed phases can only dissolve other condensed phases 
E) polar solvents dissolve nonpolar solutes and vice versa

Question 15

What is the mole fraction of nitric acid in a(n)8.46% (by mass)aqueous solution of nitric acid?

Accepted Answer

A) 0.0433 
B) 0.0830 
C) 0.0257 
D) 0.0208 
E) The density of the solution is needed to solve the problem. 
A) 0.0433 
B) 0.0830 
C) 0.0257 
D) 0.0208 
E) The density of the solution is needed to solve the problem.

Question 16

An aqueous solution with a concentration of 12.5 ppb indicates that there is ________ per liter of solution.

Accepted Answer

The answer of An aqueous solution with a concentration of...

Question 17

The solubility of nitrogen gas at 25 °C and 1 atm is 6.8 × 10-4 mol/L.If the partial pressure of nitrogen gas in air is 0.76 atm,what is the concentration (molarity)of dissolved nitrogen?

Accepted Answer

A) 6.8 × 10-4 M 
B) 5.2 × 10-4 M 
C) 4.9 × 10-4 M 
D) 3.8 × 10-4 M 
E) 1.1 × 10-5 M 
A) 6.8 × 10-4 M 
B) 5.2 × 10-4 M 
C) 4.9 × 10-4 M 
D) 3.8 × 10-4 M 
E) 1.1 × 10-5 M

Question 18

Which one of the following is least soluble in water?

Accepted Answer

A) CH3OH 
B) CH3CH2CH2OH 
C) CH3CH2OH 
D) CH3CH2CH2CH2OH 
E) CH3CH2CH2CH2CH2OH 
A) CH3OH 
B) CH3CH2CH2OH 
C) CH3CH2OH 
D) CH3CH2CH2CH2OH 
E) CH3CH2CH2CH2CH2OH

Question 19

Which of the following aqueous solutions will have the highest boiling point?

Accepted Answer

A) 0.10 m Na2SO4 
B) 0.20 m glucose 
C) 0.25 m sucrose 
D) 0.10 m NaCl 
E) 0.10 m SrSO4 
A) 0.10 m Na2SO4 
B) 0.20 m glucose 
C) 0.25 m sucrose 
D) 0.10 m NaCl 
E) 0.10 m SrSO4

Question 20

Compounds composed of a salt and water combined in definite proportions are known as ________.

Accepted Answer

A) clathrates 
B) homogenates 
C) ionic solids 
D) molecular solids 
E) hydrates 
A) clathrates 
B) homogenates 
C) ionic solids 
D) molecular solids 
E) hydrates

Exam 13: Properties of Solutions

What is the concentration (M)of HCl in a solution that is prepared by dissolving 25.5 g of HCl in of water? (Assume volume does not change after adding HCl.)

What is the mass % of ammonium chloride in a 1.73 M ammonium chloride aqueous solution at 20 °C? Density of the solution is

Adding a nonvolatile solute to a solution decreases the vapor pressure of the solution.

A solution is prepared by adding 40.00 g of lactose (milk sugar)to 110.0 g of water at The partial pressure of water above the solution is ________ torr.The vapor pressure of pure water at 55 °C is 118.0 torr.The MW of lactose is

Which one of the following substances is more likely to dissolve in benzene (C6H6)?

What is the mole fraction of hydrochloric acid in a 7.20% (by mass)aqueous solution?

Which of the following substances is more likely to dissolve in CH3OH?

A solution is prepared by dissolving 2.60 g of a strong electrolyte (formula weight = 101 g/mol)in enough water to make 1.00 L of solution.The osmotic pressure of the solution is 1.25 atm at 25.0 °C.What is the van't Hoff factor (i)for the unknown solute?

When argon is placed in a container of neon,the argon spontaneously disperses throughout the neon because ________.

Which one of the following vitamins is water soluble?

What is the osmotic pressure (in atm)of a 0.0255 M NaCl solution at 25.0 °C?

What is the molal concentration of potassium bromide in a solution prepared by dissolving 2.27 g of potassium bromide in 897 g of water?

Which of the following liquids will have the highest freezing point?

The phrase "like dissolves like" refers to the fact that ________.

What is the mole fraction of nitric acid in a(n)8.46% (by mass)aqueous solution of nitric acid?

An aqueous solution with a concentration of 12.5 ppb indicates that there is ________ per liter of solution.

The solubility of nitrogen gas at 25 °C and 1 atm is 6.8 × 10-4 mol/L.If the partial pressure of nitrogen gas in air is 0.76 atm,what is the concentration (molarity)of dissolved nitrogen?

Which one of the following is least soluble in water?

Which of the following aqueous solutions will have the highest boiling point?

Compounds composed of a salt and water combined in definite proportions are known as ________.

Introduction: Matter, energy, and Measurement

Atoms, molecules, and Ions

Chemical Reactions and Reaction Stoichiometry

Reactions in Aqueous Solution

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

Which one of the following substances is more likely to dissolve in benzene (C₆H₆)?

Which of the following substances is more likely to dissolve in CH₃OH?

The solubility of nitrogen gas at 25 °C and 1 atm is 6.8 × 10^-4 mol/L.If the partial pressure of nitrogen gas in air is 0.76 atm,what is the concentration (molarity)of dissolved nitrogen?