Question 1

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 2

Which statement concerning solutions is FALSE?

Accepted Answer

A) Solutions are homogeneous mixtures. 
B) Solutions consist of solutes and solvents. 
C) Solutions are always liquids. 
D) Aqueous solutions have water as the solvent. 
E) Solutes cannot be filtered from a solution. 
A) Solutions are homogeneous mixtures. 
B) Solutions consist of solutes and solvents. 
C) Solutions are always liquids. 
D) Aqueous solutions have water as the solvent. 
E) Solutes cannot be filtered from a solution.

Question 3

A solution that is 1 ppm contains more dissolved solute than one that is 1 ppt.

Accepted Answer

A) True 
 B)False

Question 4

Which diagram best represents the composition of an aqueous calcium chloride (CaCl2)solution? (water molecules are not shown)

Accepted Answer

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

Question 5

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 6

A patient requires 100.0 g of glucose in the next 12 hours.What volume of a 5.0% (m/V)glucose solution should be administered?

Accepted Answer

A) 2.0 L 
B) 5.0 L 
C) 200 mL 
D) 20 L 
E) 5 mL 
A) 2.0 L 
B) 5.0 L 
C) 200 mL 
D) 20 L 
E) 5 mL

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

The solubility of gases in liquids increases with increasing pressure.

Accepted Answer

A) True 
 B)False

Question 9

One liter of alcohol combined with one liter of water does NOT produce two liters of solution.

Accepted Answer

A) True 
 B)False

Question 10

What term describes a solution in which the solute concentration exceeds its equilibrium concentration under the prevailing conditions?

Accepted Answer

A) hypotonic 
B) hypertonic 
C) isotonic 
D) supersaturated 
E) saturated 
A) hypotonic 
B) hypertonic 
C) isotonic 
D) supersaturated 
E) saturated

Question 11

If the concentration of Mg2+ in solution is 3.0 × 10-3 M,what is its concentration expressed in meq/L?

Accepted Answer

A) 6.0 meq/L 
B) 3.0 meq/L 
C) 1.5 meq/L 
D) 6.0 × 10-6 meq/L 
E) 1.5 × 10-6 meq/L 
A) 6.0 meq/L 
B) 3.0 meq/L 
C) 1.5 meq/L 
D) 6.0 × 10-6 meq/L 
E) 1.5 × 10-6 meq/L

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

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 14

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

Question 15

Enough water is added to 50.0 mL of a 0.660 M NaOH solution in order to bring the total volume to 450.0 mL.What is the molarity of this diluted solution?

Accepted Answer

A) 0.0330 M 
B) 0.0733 M 
C) 0.594 M 
D) 5.94 M 
E) 0.660 M; the molarity remains unchanged if only solvent is added. 
A) 0.0330 M 
B) 0.0733 M 
C) 0.594 M 
D) 5.94 M 
E) 0.660 M; the molarity remains unchanged if only solvent is added.

Question 16

Which of the following properly describes a colligative property of a solution?

Accepted Answer

A) a solution property that depends on the identity of the solute particles present 
B) a solution property that depends on the electrical charges of the solute particles present 
C) a solution property that depends on the concentration of solute particles present 
D) a solution property that depends on the pressure of the solute particles present 
E) a solution property that depends on the concentration,identity,and pressure of the solute particles present 
A) a solution property that depends on the identity of the solute particles present 
B) a solution property that depends on the electrical charges of the solute particles present 
C) a solution property that depends on the concentration of solute particles present 
D) a solution property that depends on the pressure of the solute particles present 
E) a solution property that depends on the concentration,identity,and pressure of the solute particles present

Question 17

What type of membrane allows solvent molecules to pass through but does not allow solute molecules to pass through?

Accepted Answer

A) transport 
B) colloidal 
C) transparent 
D) semipermeable 
E) filtering 
A) transport 
B) colloidal 
C) transparent 
D) semipermeable 
E) filtering

Question 18

Osmosis may be defined as the movement of a solvent through a semipermeable membrane from a region of higher solute concentration to one of lower solute concentration.

Accepted Answer

A) True 
 B)False

Question 19

Calculate the molarity of 2.00 L of solution that contains 200.0 g of NaOH.[Formula weight: NaOH,40.0 amu]

Accepted Answer

A) 40.0 M 
B) 4.00 M 
C) 5.00 M 
D) 2.50 M 
E) 25.0 M 
A) 40.0 M 
B) 4.00 M 
C) 5.00 M 
D) 2.50 M 
E) 25.0 M

Question 20

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.

Exam 6: Solutions

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?

Which statement concerning solutions is FALSE?

A solution that is 1 ppm contains more dissolved solute than one that is 1 ppt.

Which diagram best represents the composition of an aqueous calcium chloride (CaCl2)solution? (water molecules are not shown)

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]

A patient requires 100.0 g of glucose in the next 12 hours.What volume of a 5.0% (m/V)glucose solution should be administered?

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

The solubility of gases in liquids increases with increasing pressure.

One liter of alcohol combined with one liter of water does NOT produce two liters of solution.

What term describes a solution in which the solute concentration exceeds its equilibrium concentration under the prevailing conditions?

If the concentration of Mg2+ in solution is 3.0 × 10-3 M,what is its concentration expressed in meq/L?

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

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

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

Enough water is added to 50.0 mL of a 0.660 M NaOH solution in order to bring the total volume to 450.0 mL.What is the molarity of this diluted solution?

Which of the following properly describes a colligative property of a solution?

What type of membrane allows solvent molecules to pass through but does not allow solute molecules to pass through?

Osmosis may be defined as the movement of a solvent through a semipermeable membrane from a region of higher solute concentration to one of lower solute concentration.

Calculate the molarity of 2.00 L of solution that contains 200.0 g of NaOH.[Formula weight: NaOH,40.0 amu]

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

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 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

Which diagram best represents the composition of an aqueous calcium chloride (CaCl₂)solution? (water molecules are not shown)

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]

If the concentration of Mg²⁺ in solution is 3.0 × 10^-3 M,what is its concentration expressed in meq/L?