Question 1

What is the mass of NaCl in a 0.500-L bottle of 2.00 M NaCl?

Accepted Answer

A)  29.3 g 
B)  58.5 g 
C)  117 g 
D)  234 g 
A)  29.3 g 
B)  58.5 g 
C)  117 g 
D)  234 g

Question 2

A saline solution is 5.00%(w/v). How much of water must be added to 50.0 mL of this solution to reduce the concentration of the solution to 1.0%(w/v)? (Assume volumes are additive.)

Accepted Answer

A)  50.0 mL 
B)  100.0 mL 
C)  200.0 mL 
D)  250.0 mL 
A)  50.0 mL 
B)  100.0 mL 
C)  200.0 mL 
D)  250.0 mL

Question 3

Which of the following is a description of an anhydrous salt?

Accepted Answer

A)  a salt that is insoluble in water 
B)  a salt that is soluble in water 
C)  a salt with no water incorporated in its crystal structure 
D)  a salt with water incorporated in its crystal structure 
A)  a salt that is insoluble in water 
B)  a salt that is soluble in water 
C)  a salt with no water incorporated in its crystal structure 
D)  a salt with water incorporated in its crystal structure

Question 4

A particular wine contains 0.0100 M NaHSO3 as a preservative. What is the mass of NaHSO3 in a 750-mL bottle of the wine?

Accepted Answer

A)  0.39 g 
B)  0.70 g 
C)  0.78 g 
D)  1.5 g 
A)  0.39 g 
B)  0.70 g 
C)  0.78 g 
D)  1.5 g

Question 5

Which of the following aqueous solutions of Na2SO4 is hypertonic with a 0.15 M NaCl solution?

Accepted Answer

A)  0.05 M 
B)  0.10 M 
C)  0.15 M 
D)  none of these 
A)  0.05 M 
B)  0.10 M 
C)  0.15 M 
D)  none of these

Question 6

Which of the following cannot serve as a solute in a solution?

Accepted Answer

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

Question 7

Which of the following properties does the expression "like dissolves like" generally refer to when considering the solubility of a solute in a solvent?

Accepted Answer

A)  formula weight 
B)  molecular polarity 
C)  both formula weight and molecular polarity 
D)  neither formula weight or molecular polarity 
A)  formula weight 
B)  molecular polarity 
C)  both formula weight and molecular polarity 
D)  neither formula weight or molecular polarity

Question 8

What is the solute when alcohol is dissolved in water?

Accepted Answer

A)  the alcohol 
B)  the water 
C)  the compound present in a larger amount 
D)  the compound present in a smaller amount 
A)  the alcohol 
B)  the water 
C)  the compound present in a larger amount 
D)  the compound present in a smaller amount

Question 9

Which of the following is true of electrolytes?

Accepted Answer

A)  All electrolytes dissolve only in water and no other polar liquid. 
B)  All electrolytes contain equal numbers of cations and anions. 
C)  All electrolytes dissolve only in water and no other polar liquid and contain equal numbers of cations and anions. 
D)  None of these are true. 
A)  All electrolytes dissolve only in water and no other polar liquid. 
B)  All electrolytes contain equal numbers of cations and anions. 
C)  All electrolytes dissolve only in water and no other polar liquid and contain equal numbers of cations and anions. 
D)  None of these are true.

Question 10

Which of the following terms is used to refer to a gas dissolved in a liquid?

Accepted Answer

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

Question 11

Which of the following solutions has a higher electrical conductance?

Accepted Answer

A)  0.1 M NaCl 
B)  0.2 M NaCl 
C)  Both 0.1 M NaCI and 0.2 M NaCI 
A)  0.1 M NaCl 
B)  0.2 M NaCl 
C)  Both 0.1 M NaCI and 0.2 M NaCI

Question 12

Which term is used to refer to the solid component of a solid-in-liquid solution?

Accepted Answer

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

Question 13

Which of the following is an example of a colloid in which a gas is dispersed in a liquid?

Accepted Answer

A)  butter 
B)  marshmallows 
C)  mayonnaise 
D)  whipped cream 
A)  butter 
B)  marshmallows 
C)  mayonnaise 
D)  whipped cream

Question 14

What is the mass of salt in a 400-gram sample of salt water that is 1.50%(w/w)?

Accepted Answer

A)  1.50 g 
B)  2.67 g 
C)  3.00 g 
D)  6.00 g 
A)  1.50 g 
B)  2.67 g 
C)  3.00 g 
D)  6.00 g

Question 15

Which of the following is soluble in water?

Accepted Answer

A)  benzene 
B)  gasoline 
C)  sodium chloride 
D)  carbon tetrachloride 
A)  benzene 
B)  gasoline 
C)  sodium chloride 
D)  carbon tetrachloride

Question 16

A beaker of salt water contains some solid salt at the bottom. What type of solution is in the beaker?

Accepted Answer

A)  It is a saturated solution. 
B)  It is a supersaturated solution. 
C)  It is an unsaturated solution. 
D)  We cannot tell if it is a saturated, a supersaturated, or an unsaturated solution. 
A)  It is a saturated solution. 
B)  It is a supersaturated solution. 
C)  It is an unsaturated solution. 
D)  We cannot tell if it is a saturated, a supersaturated, or an unsaturated solution.

Question 17

Rainwater is naturally slightly acidic. Which gas causes this?

Accepted Answer

A)  N2 
B)  O2 
C)  CO2 
D)  NH3 
A)  N2 
B)  O2 
C)  CO2 
D)  NH3

Question 18

If we know the solute mass and the molarity of a solution, which other concentration unit can we readily determine without needing any other measurement?

Accepted Answer

A)  (w/w)% 
B)  (w/v)% 
C)  (v/v)% 
D)  all of these 
A)  (w/w)% 
B)  (w/v)% 
C)  (v/v)% 
D)  all of these

Question 19

Which of the following aqueous solutions will have the highest osmolarity?

Accepted Answer

A)  0.1 M ethylene glycol, C2H6O2, has the highest osmolarity. 
B)  0.1 M glucose, C6H12O6, has the highest osmolarity. 
C)  0.1 M sucrose, C12H22O11, has the highest osmolarity. 
D)  All of these have the same osmolarity. 
A)  0.1 M ethylene glycol, C2H6O2, has the highest osmolarity. 
B)  0.1 M glucose, C6H12O6, has the highest osmolarity. 
C)  0.1 M sucrose, C12H22O11, has the highest osmolarity. 
D)  All of these have the same osmolarity.

Question 20

What happens to a solution post dilution?

Accepted Answer

A)  The number of moles of solute increases. 
B)  The number of moles of solute decreases. 
C)  The number of moles of solvent increases. 
D)  The number of moles of solvent decreases. 
A)  The number of moles of solute increases. 
B)  The number of moles of solute decreases. 
C)  The number of moles of solvent increases. 
D)  The number of moles of solvent decreases.

Exam 6: Solutions and Colloids

What is the mass of NaCl in a 0.500-L bottle of 2.00 M NaCl?

A saline solution is 5.00%(w/v). How much of water must be added to 50.0 mL of this solution to reduce the concentration of the solution to 1.0%(w/v)? (Assume volumes are additive.)

Which of the following is a description of an anhydrous salt?

A particular wine contains 0.0100 M NaHSO3 as a preservative. What is the mass of NaHSO3 in a 750-mL bottle of the wine?

Which of the following aqueous solutions of Na2SO4 is hypertonic with a 0.15 M NaCl solution?

Which of the following cannot serve as a solute in a solution?

Which of the following properties does the expression "like dissolves like" generally refer to when considering the solubility of a solute in a solvent?

What is the solute when alcohol is dissolved in water?

Which of the following is true of electrolytes?

Which of the following terms is used to refer to a gas dissolved in a liquid?

Which of the following solutions has a higher electrical conductance?

Which term is used to refer to the solid component of a solid-in-liquid solution?

Which of the following is an example of a colloid in which a gas is dispersed in a liquid?

What is the mass of salt in a 400-gram sample of salt water that is 1.50%(w/w)?

Which of the following is soluble in water?

A beaker of salt water contains some solid salt at the bottom. What type of solution is in the beaker?

Rainwater is naturally slightly acidic. Which gas causes this?

If we know the solute mass and the molarity of a solution, which other concentration unit can we readily determine without needing any other measurement?

Which of the following aqueous solutions will have the highest osmolarity?

What happens to a solution post dilution?

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, Alkynes, and Aromatic Compounds

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

A particular wine contains 0.0100 M NaHSO₃ as a preservative. What is the mass of NaHSO₃ in a 750-mL bottle of the wine?

Which of the following aqueous solutions of Na₂SO₄ is hypertonic with a 0.15 M NaCl solution?