Question 1

Which of the following is NOT a colligative property of a solution?

Accepted Answer

A) vapor pressure lowering 
B) conductivity 
C) boiling point elevation 
D) freezing point depression 
E) osmotic pressure 
A) vapor pressure lowering 
B) conductivity 
C) boiling point elevation 
D) freezing point depression 
E) osmotic pressure

Question 2

Which statement concerning solution concentration is FALSE?

Accepted Answer

A) An unsaturated solution contains less than the maximum amount of solute that can be dissolved in the solvent. 
B) A saturated solution contains more than 100 g of dissolved solute. 
C) The concentration of a saturated solution is equal to the solubility of the solute. 
D) A solution can be made less concentrated by adding additional solvent. 
E) The molarity of a solution is the number of moles of solute present in one liter of the solution. 
A) An unsaturated solution contains less than the maximum amount of solute that can be dissolved in the solvent. 
B) A saturated solution contains more than 100 g of dissolved solute. 
C) The concentration of a saturated solution is equal to the solubility of the solute. 
D) A solution can be made less concentrated by adding additional solvent. 
E) The molarity of a solution is the number of moles of solute present in one liter of the solution.

Question 3

A solution contains 1.65 g of NaF in a total volume of 150.0 mL.What is its concentration expressed as % (m/V)?

Accepted Answer

A) 0.011% 
B) 1.10% 
C) 11.0% 
D) 110% 
E) 1110% 
A) 0.011% 
B) 1.10% 
C) 11.0% 
D) 110% 
E) 1110%

Question 4

An unopened soda bottle at 25°C contains CO2 gas at 6.2 atm.Calculate the equilibrium concentration of CO2 in the unopened soda bottle.[   = 3.1 × 10-2 mol/(L•atm)]

Accepted Answer

A) 0.19 mol/L 
B) 200 mol/L 
C) 0.005 mol/L 
D) 19.2 mol/L 
E) 3.1 mol/L 
A) 0.19 mol/L 
B) 200 mol/L 
C) 0.005 mol/L 
D) 19.2 mol/L 
E) 3.1 mol/L

Question 5

Colligative properties depend only on the concentration of solute particles, not on their identity.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following correctly describes what happens when red blood cells are placed in a hypertonic solution?

Accepted Answer

A) There will be a net movement of water into the red blood cells, the cells will swell and burst. 
B) There will be a net movement of water out of the red blood cells, and the cells will shrink and collapse. 
C) There will be a net movement of water from the hypertonic solution to the red blood cells, and the cells will shrink and burst. 
D) There will be no net movement of water because red blood cells do not have a semipermeable membrane. 
E) There will be no net movement of water because the red blood cells and the hypertonic solution have the same osmolarity. 
A) There will be a net movement of water into the red blood cells, the cells will swell and burst. 
B) There will be a net movement of water out of the red blood cells, and the cells will shrink and collapse. 
C) There will be a net movement of water from the hypertonic solution to the red blood cells, and the cells will shrink and burst. 
D) There will be no net movement of water because red blood cells do not have a semipermeable membrane. 
E) There will be no net movement of water because the red blood cells and the hypertonic solution have the same osmolarity.

Question 7

Increasing the pressure of a gas over a solution increases the solubility of the gas in the solution.This is an example corresponding to which law?

Accepted Answer

A) Dalton's Law 
B) Henry's Law 
C) Tyndall's Law 
D) Raoult's Law 
E) Boyle's Law 
A) Dalton's Law 
B) Henry's Law 
C) Tyndall's Law 
D) Raoult's Law 
E) Boyle's Law

Question 8

An aqueous solution containing a nonvolatile solute such as sucrose will boil above 100°C at 1 atm pressure.

Accepted Answer

A) True 
 B)False

Question 9

What is the law that states that vapor pressure of the solvent decreases in proportion to the concentration of the solute?

Accepted Answer

A) Dalton's Law 
B) Henry's Law 
C) Tyndall's Law 
D) Raoult's Law 
E) Boyle's Law 
A) Dalton's Law 
B) Henry's Law 
C) Tyndall's Law 
D) Raoult's Law 
E) Boyle's Law

Question 10

The solid material that separates from solution when its solubility is exceeded is called a precipitate.

Accepted Answer

A) True 
 B)False

Question 11

Calculate the concentration (% m/V) of NaCl solution that was made by dissolving 15.0 g of sodium chloride in enough water to make 300.0 mL of solution.

Accepted Answer

A) 50.0% (m/V) 
B) 0.0500% (m/V) 
C) 0.356% (m/V) 
D) 35.6% (m/V) 
E) 5.00% (m/V) 
A) 50.0% (m/V) 
B) 0.0500% (m/V) 
C) 0.356% (m/V) 
D) 35.6% (m/V) 
E) 5.00% (m/V)

Question 12

Assuming that air is a solution containing four molecules of N2 for every one molecule O2, what is the concentration of O2 in this solution, expressed as % (m/m)? [Formula weights: N2, 28.02 amu; O2, 32.00 amu]

Accepted Answer

A) 22% (m/m) 
B) 47% (m/m) 
C) 53% (m/m) 
D) 78% (m/m) 
E) 114% (m/m) 
A) 22% (m/m) 
B) 47% (m/m) 
C) 53% (m/m) 
D) 78% (m/m) 
E) 114% (m/m)

Question 13

Ringer's solution is used in the treatment of burns and wounds.It is prepared by dissolving 8.6 g of NaCl, 0.30 g of KCl, and 0.33 g of CaCl2 in water, and diluting to a volume of 1.0 L.Which of the following is an accurate description of Ringer's solution?

Accepted Answer

A) NaCl is the solvent in this solution. 
B) NaCl, KCl, and CaCl2 are all solvents in this solution. 
C) Ringer's solution is a solid solution. 
D) Ringer's solution is a heterogeneous mixture. 
E) Ringer's solution is an aqueous solution. 
A) NaCl is the solvent in this solution. 
B) NaCl, KCl, and CaCl2 are all solvents in this solution. 
C) Ringer's solution is a solid solution. 
D) Ringer's solution is a heterogeneous mixture. 
E) Ringer's solution is an aqueous solution.

Question 14

What mass of glucose is contained in 500.0 mL of a 5.00% (m/V) solution?

Accepted Answer

A) 5.00 g 
B) 25.0 g 
C) 250 g 
D) 50.0 g 
E) 55.0 g 
A) 5.00 g 
B) 25.0 g 
C) 250 g 
D) 50.0 g 
E) 55.0 g

Question 15

A solution in equilibrium with undissolved solute is said to be unsaturated.

Accepted Answer

A) True 
 B)False

Question 16

An unknown amount of water is added to 75 mL of a 3.5 M sodium chloride solution.What can be said for certain about the concentration of the solution that results?

Accepted Answer

A) The concentration of the resulting solution will be less than 3.5 M. 
B) The concentration of the resulting solution will be greater than 3.5 M. 
C) The concentration of the resulting solution will be 0.26 M. 
D) The concentration of the resulting solution will be 3.5 M because the amount of glucose has not changed. 
E) It is impossible to say anything for certain about the concentration because the amount of water that was added is unknown. 
A) The concentration of the resulting solution will be less than 3.5 M. 
B) The concentration of the resulting solution will be greater than 3.5 M. 
C) The concentration of the resulting solution will be 0.26 M. 
D) The concentration of the resulting solution will be 3.5 M because the amount of glucose has not changed. 
E) It is impossible to say anything for certain about the concentration because the amount of water that was added is unknown.

Question 17

A typical blood serum concentration of   is 2 meq/L.What is the concentration of this ion expressed in mol/L?

Accepted Answer

A) 0.001 mol/L 
B) 1 mol/L 
C) 0.002 mol/L 
D) 0.0003 mol/L 
E) 0.004 mol/L 
A) 0.001 mol/L 
B) 1 mol/L 
C) 0.002 mol/L 
D) 0.0003 mol/L 
E) 0.004 mol/L

Question 18

The label on a jar of jam says it contains 13 g of sucrose per tablespoon (15 mL).What is the molarity of sucrose in the jam? [Molar mass: sucrose, 342.3 g/mol]

Accepted Answer

A) 0.0025 M 
B) 0.57 M 
C) 0.867 M 
D) 2.5 M 
E) 297 M 
A) 0.0025 M 
B) 0.57 M 
C) 0.867 M 
D) 2.5 M 
E) 297 M

Question 19

What concentration term is defined as the number of moles of solute per kilogram of solvent in a solution?

Accepted Answer

A) normality 
B) osmolarity 
C) % (m/V) 
D) molarity 
E) molality 
A) normality 
B) osmolarity 
C) % (m/V) 
D) molarity 
E) molality

Question 20

What volume of a 0.1250 M KCl solution contains 2.330 g of KCl? [Formula weight: KCl, 74.55 amu]

Accepted Answer

A) 0.2913 L 
B) 26.95 mL 
C) 25.00 mL 
D) 1.500 L 
E) 250.0 mL 
A) 0.2913 L 
B) 26.95 mL 
C) 25.00 mL 
D) 1.500 L 
E) 250.0 mL

Exam 6: Solutions

Which of the following is NOT a colligative property of a solution?

Which statement concerning solution concentration is FALSE?

A solution contains 1.65 g of NaF in a total volume of 150.0 mL.What is its concentration expressed as % (m/V)?

An unopened soda bottle at 25°C contains CO2 gas at 6.2 atm.Calculate the equilibrium concentration of CO2 in the unopened soda bottle.[ = 3.1 × 10-2 mol/(L•atm)]

Colligative properties depend only on the concentration of solute particles, not on their identity.

Which of the following correctly describes what happens when red blood cells are placed in a hypertonic solution?

Increasing the pressure of a gas over a solution increases the solubility of the gas in the solution.This is an example corresponding to which law?

An aqueous solution containing a nonvolatile solute such as sucrose will boil above 100°C at 1 atm pressure.

What is the law that states that vapor pressure of the solvent decreases in proportion to the concentration of the solute?

The solid material that separates from solution when its solubility is exceeded is called a precipitate.

Calculate the concentration (% m/V) of NaCl solution that was made by dissolving 15.0 g of sodium chloride in enough water to make 300.0 mL of solution.

Assuming that air is a solution containing four molecules of N2 for every one molecule O2, what is the concentration of O2 in this solution, expressed as % (m/m)? [Formula weights: N2, 28.02 amu; O2, 32.00 amu]

Ringer's solution is used in the treatment of burns and wounds.It is prepared by dissolving 8.6 g of NaCl, 0.30 g of KCl, and 0.33 g of CaCl2 in water, and diluting to a volume of 1.0 L.Which of the following is an accurate description of Ringer's solution?

What mass of glucose is contained in 500.0 mL of a 5.00% (m/V) solution?

A solution in equilibrium with undissolved solute is said to be unsaturated.

An unknown amount of water is added to 75 mL of a 3.5 M sodium chloride solution.What can be said for certain about the concentration of the solution that results?

A typical blood serum concentration of is 2 meq/L.What is the concentration of this ion expressed in mol/L?

The label on a jar of jam says it contains 13 g of sucrose per tablespoon (15 mL).What is the molarity of sucrose in the jam? [Molar mass: sucrose, 342.3 g/mol]

What concentration term is defined as the number of moles of solute per kilogram of solvent in a solution?

What volume of a 0.1250 M KCl solution contains 2.330 g of KCl? [Formula weight: KCl, 74.55 amu]

Chemistry:methods and Measurement

The Structure of the Atom and the Periodic Table

Structure and Properties of Ionic and Covalent Compounds

Calculations, Chemical Changes, and the Chemical Equation

States of Matter- Gases, Liquids, and Solids

Energy, Rate and Equilibrium

Acids and Bases

The Nucleus, Radioactivity, and Nuclear Medicine

An Introduction to Organic Chemistry- the Saturated Hydrocarbons

The Unsaturated Hydrocarbons- Alkenes, Alkynes, and Aromatics

Alcohols, Phenols, Thiols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Carboxylic Acid Derivatives

Amines and Amides

Carbohydrates

Lipids and Their Functions in Biochemical Systems

Protein Structure and Function

Enzymes

Introduction to Molecular Genetics

Carbohydrate Metabolism

Aerobic Respiration and Energy Production

Fatty Acid Metabolism

Filters

An unopened soda bottle at 25°C contains CO₂ gas at 6.2 atm.Calculate the equilibrium concentration of CO₂ in the unopened soda bottle.[ = 3.1 × 10^-2 mol/(L•atm)]

Assuming that air is a solution containing four molecules of N₂ for every one molecule O₂, what is the concentration of O₂ in this solution, expressed as % (m/m)? [Formula weights: N₂, 28.02 amu; O₂, 32.00 amu]

Ringer's solution is used in the treatment of burns and wounds.It is prepared by dissolving 8.6 g of NaCl, 0.30 g of KCl, and 0.33 g of CaCl₂ in water, and diluting to a volume of 1.0 L.Which of the following is an accurate description of Ringer's solution?