Question 1

What is the molality of ammonium chloride in a 3.95 M ammonium chloride aqueous solution at 20 °C? Density of the solution is

Accepted Answer

A) 0.0780 
B) 3.95 
C) 0.268 
D) 20.00 
E) 4.67 
A) 0.0780 
B) 3.95 
C) 0.268 
D) 20.00 
E) 4.67

Question 2

Which one of the following concentration units varies with temperature?

Accepted Answer

A) molarity 
B) mass percent 
C) mole fraction 
D) molality 
E) all of the above 
A) molarity 
B) mass percent 
C) mole fraction 
D) molality 
E) all of the above

Question 3

Which one of the following substances is more likely to dissolve in CCl4?

Accepted Answer

A) CBr4 
B) HBr 
C) HCl 
D) CH3CH2OH 
E) NaCl 
A) CBr4 
B) HBr 
C) HCl 
D) CH3CH2OH 
E) NaCl

Question 4

A solution contains 30 ppm of some heavy metal and the density of the solution is   This means that ________.

Accepted Answer

A) 100 g of the solution contains 30 g of heavy metal 
B) 100 g of the solution contains 30 mg of heavy metal 
C) the solution is 30% by mass of heavy metal 
D) there are 30 mg of the heavy metal in 1.0 L of this solution 
E) the molarity of the solution is 30 M 
A) 100 g of the solution contains 30 g of heavy metal 
B) 100 g of the solution contains 30 mg of heavy metal 
C) the solution is 30% by mass of heavy metal 
D) there are 30 mg of the heavy metal in 1.0 L of this solution 
E) the molarity of the solution is 30 M

Question 5

How much sodium nitrate (g)is in a   sample of solution that is 27.1% by mass?

Accepted Answer

A) 5570 
B) 13.2 
C) 0.00132 
D) 758 
E) 55.7 
A) 5570 
B) 13.2 
C) 0.00132 
D) 758 
E) 55.7

Question 6

Which one of the following is most soluble in hexane (C6H14)?

Accepted Answer

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

Question 7

The ________ is a phenomenon used to differentiate colloids and correct solutions.

Accepted Answer

The answer of The ________ is a phenomenon used to...

Question 8

A solution contains 39% phosphoric acid by mass.This means that ________.

Accepted Answer

A) 100 g of this solution contains 39 g of phosphoric acid 
B) 1 mL of this solution contains 39 g of phosphoric acid 
C) 1 L of this solution has a mass of 39 g 
D) 1 L of this solution contains 39 mL of phosphoric acid 
E) the density of this solution is 3.9 g/mL 
A) 100 g of this solution contains 39 g of phosphoric acid 
B) 1 mL of this solution contains 39 g of phosphoric acid 
C) 1 L of this solution has a mass of 39 g 
D) 1 L of this solution contains 39 mL of phosphoric acid 
E) the density of this solution is 3.9 g/mL

Question 9

What is the % by mass of sodium chloride in an aqueous solution that is 2.39 M and has a density of 1.01 g/mL?

Accepted Answer

A) 2.36 
B) 13.8 
C) 7.83 
D) 140. 
E) 19.6 
A) 2.36 
B) 13.8 
C) 7.83 
D) 140. 
E) 19.6

Question 10

A 81.5 g sample of calcium chloride is dissolved in 102 g of water at 45 °C.The solution is cooled to 20.0 °C and no precipitate is observed.This solution is ________.

Accepted Answer

A) hydrated 
B) placated 
C) saturated 
D) unsaturated 
E) supersaturated 
A) hydrated 
B) placated 
C) saturated 
D) unsaturated 
E) supersaturated

Question 11

When solutions of strong electrolytes in water are formed,the ions are surrounded by water molecules. These interactions are described as a case of ________.

Accepted Answer

A) hydration 
B) supersaturation 
C) crystallization 
D) dehydration 
E) saturation 
A) hydration 
B) supersaturation 
C) crystallization 
D) dehydration 
E) saturation

Question 12

What is the molal concentration of KCl in a solution prepared by adding 2.11 mol of KCl to 889 g of water?

Accepted Answer

A) 2.37 
B) 2.37 × 10-3 
C) 421 
D) 0.421 
E) 1.88 × 103 
A) 2.37 
B) 2.37 × 10-3 
C) 421 
D) 0.421 
E) 1.88 × 103

Question 13

13.3 g of benzene (C6H6)is dissolved in 282 g of carbon tetrachloride.What is the molal concentration of benzene in this solution?

Accepted Answer

A) 6.04 ×   
B) 0.0851 
C) 0.0450 
D) 4.50 
E) 0.604 
A) 6.04 ×   
B) 0.0851 
C) 0.0450 
D) 4.50 
E) 0.604

Question 14

Of the following,a 0.2 M aqueous solution of ________ will have the highest freezing point.

Accepted Answer

A) RbBr 
B) K2SO4 
C) Sr(NO3)2 
D) (NH4)2SO4 
E) Fe(NO3)2 
A) RbBr 
B) K2SO4 
C) Sr(NO3)2 
D) (NH4)2SO4 
E) Fe(NO3)2

Question 15

What is the formula weight of iron(III)chloride hexahydrate?

Accepted Answer

The answer of What is the formula weight of iron(III)chloride...

Question 16

What is the chloride ion concentration (M)in a solution that contains 0.100 M aluminum chloride?

Accepted Answer

A) 0.100 
B) 0.300 
C) 0.050 
D) 0.033 
E) 0.200 
A) 0.100 
B) 0.300 
C) 0.050 
D) 0.033 
E) 0.200

Question 17

The solubility of MnSO4 monohydrate in water at 20 °C is 70.0 g per 100.0 mL of water.A solution at   that is 0.401 M in MnSO4 monohydrate is best described as a(n)________ solution.The formula weight of MnSO4 monohydrate is 168.97 g/mol.

Accepted Answer

A) hydrated 
B) solvated 
C) saturated 
D) unsaturated 
E) supersaturated 
A) hydrated 
B) solvated 
C) saturated 
D) unsaturated 
E) supersaturated

Question 18

What is the solubility concentration (M)of nitrogen gas in 25 °C water and at a nitrogen pressure of 3.5 atm? The solubility of nitrogen gas in water at 25 °C and a nitrogen pressure of 1.0 atm is

Accepted Answer

A) 0.00086 
B) 120 
C) 0.0037 
D) 3.5 
E) 0.0024 
A) 0.00086 
B) 120 
C) 0.0037 
D) 3.5 
E) 0.0024

Question 19

Which one of the following solutes has a limiting van't Hoff factor (i)of 3 when dissolved in water?

Accepted Answer

A) KNO3 
B) CH3OH 
C) CCl4 
D) Na2SO4 
E) sucrose 
A) KNO3 
B) CH3OH 
C) CCl4 
D) Na2SO4 
E) sucrose

Question 20

The concentration of CO2 in a soft drink bottled with a partial pressure of CO2 of 4.0 atm over the liquid at 25 °C is 1.2 × 10-1 M.The Henry's law constant for CO2 at this temperature is ________.

Accepted Answer

A) 3.0 × 10-2 mol/L-atm 
B) 4.5 × 10-3 mol/L-atm 
C) 5.6 × 10-3 mol/L-atm 
D) 2.3 × 10-2 mol/L-atm 
E) More information is needed to solve the problem. 
A) 3.0 × 10-2 mol/L-atm 
B) 4.5 × 10-3 mol/L-atm 
C) 5.6 × 10-3 mol/L-atm 
D) 2.3 × 10-2 mol/L-atm 
E) More information is needed to solve the problem.

Exam 13: Properties of Solutions

What is the molality of ammonium chloride in a 3.95 M ammonium chloride aqueous solution at 20 °C? Density of the solution is

Which one of the following concentration units varies with temperature?

Which one of the following substances is more likely to dissolve in CCl4?

A solution contains 30 ppm of some heavy metal and the density of the solution is This means that ________.

How much sodium nitrate (g)is in a sample of solution that is 27.1% by mass?

Which one of the following is most soluble in hexane (C6H14)?

The ________ is a phenomenon used to differentiate colloids and correct solutions.

A solution contains 39% phosphoric acid by mass.This means that ________.

What is the % by mass of sodium chloride in an aqueous solution that is 2.39 M and has a density of 1.01 g/mL?

A 81.5 g sample of calcium chloride is dissolved in 102 g of water at 45 °C.The solution is cooled to 20.0 °C and no precipitate is observed.This solution is ________.

When solutions of strong electrolytes in water are formed,the ions are surrounded by water molecules. These interactions are described as a case of ________.

What is the molal concentration of KCl in a solution prepared by adding 2.11 mol of KCl to 889 g of water?

13.3 g of benzene (C6H6)is dissolved in 282 g of carbon tetrachloride.What is the molal concentration of benzene in this solution?

Of the following,a 0.2 M aqueous solution of ________ will have the highest freezing point.

What is the formula weight of iron(III)chloride hexahydrate?

What is the chloride ion concentration (M)in a solution that contains 0.100 M aluminum chloride?

The solubility of MnSO4 monohydrate in water at 20 °C is 70.0 g per 100.0 mL of water.A solution at that is 0.401 M in MnSO4 monohydrate is best described as a(n)________ solution.The formula weight of MnSO4 monohydrate is 168.97 g/mol.

What is the solubility concentration (M)of nitrogen gas in 25 °C water and at a nitrogen pressure of 3.5 atm? The solubility of nitrogen gas in water at 25 °C and a nitrogen pressure of 1.0 atm is

Which one of the following solutes has a limiting van't Hoff factor (i)of 3 when dissolved in water?

The concentration of CO2 in a soft drink bottled with a partial pressure of CO2 of 4.0 atm over the liquid at 25 °C is 1.2 × 10-1 M.The Henry's law constant for CO2 at this temperature is ________.

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 CCl₄?

Which one of the following is most soluble in hexane (C₆H₁₄)?

13.3 g of benzene (C₆H₆)is dissolved in 282 g of carbon tetrachloride.What is the molal concentration of benzene in this solution?

The solubility of MnSO₄ monohydrate in water at 20 °C is 70.0 g per 100.0 mL of water.A solution at that is 0.401 M in MnSO₄ monohydrate is best described as a(n)________ solution.The formula weight of MnSO₄ monohydrate is 168.97 g/mol.

The concentration of CO₂ in a soft drink bottled with a partial pressure of CO₂ of 4.0 atm over the liquid at 25 °C is 1.2 × 10^-1 M.The Henry's law constant for CO₂ at this temperature is ________.