Question 1

A chemist has a sample which is known to be a solution. Which of the following might be used to separate the components of the solution?

Accepted Answer

A)  chromatography 
B)  distillation 
C)  either a or b 
D)  neither a nor b 
A)  chromatography 
B)  distillation 
C)  either a or b 
D)  neither a nor b

Question 2

Which of the following is associated with cells in a hypertonic solution?

Accepted Answer

A)  crenation 
B)  hemolysis 
C)  reverse osmosis 
D)  none of these 
A)  crenation 
B)  hemolysis 
C)  reverse osmosis 
D)  none of these

Question 3

Of the ions Cl-, Na+, NH4+ and NO3-, which will move towards the cathode?

Accepted Answer

A)  only chloride ions 
B)  only sodium ions 
C)  both chloride ions and nitrate ions 
D)  both the sodium ion and ammonium ions 
A)  only chloride ions 
B)  only sodium ions 
C)  both chloride ions and nitrate ions 
D)  both the sodium ion and ammonium ions

Question 4

The following shows the beginning of the laboratory preparation of an aqueous solution of the hypothetical compound AB (150.5 g/mol).  
-Which letter indicates the solute?

Accepted Answer

A)  A 
B)  B 
C)  C 
A)  A 
B)  B 
C)  C

Question 5

When considering the solubility of a particular solute in a particular solvent the term "like dissolves like" generally refers to which of the following properties?

Accepted Answer

A)  formula weight 
B)  molecular shape 
C)  both a and b 
D)  neither a nor b 
A)  formula weight 
B)  molecular shape 
C)  both a and b 
D)  neither a nor b

Question 6

In a solution of a gas in a liquid, the gas is called which of the following?

Accepted Answer

A)  concentrate 
B)  dissolvate 
C)  solute 
D)  solvent 
A)  concentrate 
B)  dissolvate 
C)  solute 
D)  solvent

Question 7

The following shows the beginning of the laboratory preparation of an aqueous solution of the hypothetical compound AB (150.5 g/mol).  
-Which letter indicates the solvent?

Accepted Answer

A)  A 
B)  B 
C)  C 
A)  A 
B)  B 
C)  C

Question 8

Which of the following can pass through a dialysis membrane?

Accepted Answer

A)  colloidal particles 
B)  macromolecules 
C)  small molecules 
D)  all of them 
A)  colloidal particles 
B)  macromolecules 
C)  small molecules 
D)  all of them

Question 9

Which of the following is true of a solid which is hygroscopic?

Accepted Answer

A)  It will gain weight when exposed to a damp environment. 
B)  It may change its color upon being exposed to a damp environment. 
C)  both a and b 
D)  neither a nor b 
A)  It will gain weight when exposed to a damp environment. 
B)  It may change its color upon being exposed to a damp environment. 
C)  both a and b 
D)  neither a nor b

Question 10

A solution has a concentration of 15 ppm. Which of the following is another way to describe the concentration of this solution?

Accepted Answer

A)  0.015 ppb 
B)  0.15 ppb 
C)  1500 ppb 
D)  15000 ppb 
A)  0.015 ppb 
B)  0.15 ppb 
C)  1500 ppb 
D)  15000 ppb

Question 11

The term miscible is applied to which of the following solvent/solute combinations?

Accepted Answer

A)  liquid/gas 
B)  liquid/liquid 
C)  liquid/solid 
D)  none of these 
A)  liquid/gas 
B)  liquid/liquid 
C)  liquid/solid 
D)  none of these

Question 12

If we wish to prepare 250. mL of 0.200 M BaCl2 solution, how much solid BaCl2 is needed?

Accepted Answer

A)  4.17 g 
B)  5.21 g 
C)  10.4 g 
D)  20.8 g 
A)  4.17 g 
B)  5.21 g 
C)  10.4 g 
D)  20.8 g

Question 13

The term water of hydration is applied to which to which of the following?

Accepted Answer

A)  water molecules required to dissolve a solid 
B)  water molecules associated with ions in solution 
C)  water molecules associated with a salt in the solid state 
D)  none of the above 
A)  water molecules required to dissolve a solid 
B)  water molecules associated with ions in solution 
C)  water molecules associated with a salt in the solid state 
D)  none of the above

Question 14

Which of the following concentration units will not change if the solution is heated?

Accepted Answer

A)  molarity 
B)  %(w/v) 
C)  both a and b 
D)  neither a nor b 
A)  molarity 
B)  %(w/v) 
C)  both a and b 
D)  neither a nor b

Question 15

Which of the following happens when NaCl dissolves in water?

Accepted Answer

A)  The chloride ions are attracted to the negative end of the water dipole. 
B)  Sodium and chloride ions form covalent bonds with water molecules. 
C)  The sodium ions are attracted to the negative end of the water dipole. 
D)  The sodium ions are attracted to the positive end of the water dipole. 
A)  The chloride ions are attracted to the negative end of the water dipole. 
B)  Sodium and chloride ions form covalent bonds with water molecules. 
C)  The sodium ions are attracted to the negative end of the water dipole. 
D)  The sodium ions are attracted to the positive end of the water dipole.

Question 16

The term alloy is applied to which of the following solvent/solute combinations?

Accepted Answer

A)  liquid/solid 
B)  liquid/liquid 
C)  solid/solid 
D)  none of these 
A)  liquid/solid 
B)  liquid/liquid 
C)  solid/solid 
D)  none of these

Question 17

What is the %(w/w) of a salt solution prepared by dissolving 35.0 g of NaCl in 115 g of water?

Accepted Answer

A)  2.33% 
B)  3.04% 
C)  23.3% 
D)  30.4% 
A)  2.33% 
B)  3.04% 
C)  23.3% 
D)  30.4%

Question 18

Consider the following graph.  
-Approximately what mass of A will dissolve in 100 mL of water at 75 °C?

Accepted Answer

A)  25 g 
B)  40 g 
C)  55 g 
D)  70 g 
A)  25 g 
B)  40 g 
C)  55 g 
D)  70 g

Question 19

Which of the following laws describes the relationship between pressure and the solubility of gases?

Accepted Answer

A)  Avogadro's 
B)  Boyle's 
C)  Dalton's 
D)  Henry's 
A)  Avogadro's 
B)  Boyle's 
C)  Dalton's 
D)  Henry's

Question 20

Which of the following solutions has the highest osmolarity?

Accepted Answer

A)  0.1 M NaCl 
B)  0.1 M BaCl2 
C)  0.1 M AlCl3 
D)  All have the same osmolarity. 
A)  0.1 M NaCl 
B)  0.1 M BaCl2 
C)  0.1 M AlCl3 
D)  All have the same osmolarity.

Exam 6: Solutions and Colloids

A chemist has a sample which is known to be a solution. Which of the following might be used to separate the components of the solution?

Which of the following is associated with cells in a hypertonic solution?

Of the ions Cl-, Na+, NH4+ and NO3-, which will move towards the cathode?

The following shows the beginning of the laboratory preparation of an aqueous solution of the hypothetical compound AB (150.5 g/mol). -Which letter indicates the solute?

When considering the solubility of a particular solute in a particular solvent the term "like dissolves like" generally refers to which of the following properties?

In a solution of a gas in a liquid, the gas is called which of the following?

The following shows the beginning of the laboratory preparation of an aqueous solution of the hypothetical compound AB (150.5 g/mol). -Which letter indicates the solvent?

Which of the following can pass through a dialysis membrane?

Which of the following is true of a solid which is hygroscopic?

A solution has a concentration of 15 ppm. Which of the following is another way to describe the concentration of this solution?

The term miscible is applied to which of the following solvent/solute combinations?

If we wish to prepare 250. mL of 0.200 M BaCl2 solution, how much solid BaCl2 is needed?

The term water of hydration is applied to which to which of the following?

Which of the following concentration units will not change if the solution is heated?

Which of the following happens when NaCl dissolves in water?

The term alloy is applied to which of the following solvent/solute combinations?

What is the %(w/w) of a salt solution prepared by dissolving 35.0 g of NaCl in 115 g of water?

Consider the following graph. -Approximately what mass of A will dissolve in 100 mL of water at 75 °C?

Which of the following laws describes the relationship between pressure and the solubility of gases?

Which of the following solutions has the highest osmolarity?

Matter, Energy, and Measurement

Atoms

Chemical Bonds

Chemical Reactions

Gases, Liquids, and Solids

Reaction Rates and Chemical Equilibrium

Acids and Bases

Nuclear Chemistry

Organic Chemistry

Alkanes

Alkenes and Alkynes

Benzene and Its Derivatives

Alcohols, Ethers, and Thiols

Chirality: the Handedness of Molecules

Amines

Aldehydes and Ketones

Carboxylic Acids

Carboxylic Anhydrides, Esters, and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Chemical Communications: Neurotransmitters and Hormones

Nucleotides, Nucleic Acids, and Heredity

Gene Expression and Protein Synthesis

Bioenergetics: How the Body Converts Food to Energy

Specific Catabolic Pathways: Carbohydrate, Lipid, and Protein Metabolism

Biosynthetic Pathways

Nutrition

Immunochemistry

Body Fluids

Filters

Of the ions Cl-, Na⁺, NH₄⁺ and NO₃-, which will move towards the cathode?

If we wish to prepare 250. mL of 0.200 M BaCl₂ solution, how much solid BaCl₂ is needed?