Question 1

Which of the following are intermediates between homogenous and heterogeneous mixtures?

Accepted Answer

A)  alloys 
B)  suspensions 
C)  plastics 
D)  solutions 
A)  alloys 
B)  suspensions 
C)  plastics 
D)  solutions

Question 2

Which of the following is a solution?

Accepted Answer

A)  blood plasma 
B)  cigarette smoke 
C)  milk 
D)  none of these 
A)  blood plasma 
B)  cigarette smoke 
C)  milk 
D)  none of these

Question 3

Why is the osmotic pressure of the dialysis solution adjusted in hemodialysis?

Accepted Answer

A)  to prevent the loss of Na+ from blood 
B)  to prevent the loss of glucose from blood 
C)  to prevent the loss of Na+ and glucose from blood 
D)  none of these 
A)  to prevent the loss of Na+ from blood 
B)  to prevent the loss of glucose from blood 
C)  to prevent the loss of Na+ and glucose from blood 
D)  none of these

Question 4

Saline solutions (NaCl in water) used to deliver intravenous drugs are 0.89%(w/v). What mass of NaCl is found in 500.0 mL of such a solution?

Accepted Answer

A)  0.45 g 
B)  0.89 g 
C)  4.5 g 
D)  8.9 g 
A)  0.45 g 
B)  0.89 g 
C)  4.5 g 
D)  8.9 g

Question 5

The following photograph shows the laboratory apparatus required for preparing an aqueous solution of the hypothetical compound AB (150.5 g/mol). If the volume of the volumetric flask had been 500.0 mL instead of 100.0 mL and the amount of AB had been 25.5 g, how would the molarity of the resulting solution have been affected?

Accepted Answer

A)  It would have increased by a factor of 5. 
B)  It would have decreased by a factor of 5. 
C)  It would have increased by a factor of 10. 
D)  It would have decreased by a factor of 10. 
E)  It would have remained unchanged. 
A)  It would have increased by a factor of 5. 
B)  It would have decreased by a factor of 5. 
C)  It would have increased by a factor of 10. 
D)  It would have decreased by a factor of 10. 
E)  It would have remained unchanged.

Question 6

Which of the following takes place when HCl(g) dissolves in water?

Accepted Answer

A)  HCl(g) reacts with water. 
B)  The resulting solution is a strong electrolyte. 
C)  HCI(g) reacts with water and the resulting solution is a strong electrolyte. 
D)  None of these are true. 
A)  HCl(g) reacts with water. 
B)  The resulting solution is a strong electrolyte. 
C)  HCI(g) reacts with water and the resulting solution is a strong electrolyte. 
D)  None of these are true.

Question 7

What is the approximate residual concentration of salt in the drinking water produced by the reverse osmosis of sea water?

Accepted Answer

A)  0 ppm 
B)  40 ppm 
C)  400 ppm 
D)  4000 ppm 
A)  0 ppm 
B)  40 ppm 
C)  400 ppm 
D)  4000 ppm

Question 8

How many moles of solute are contained in 500.0 mL of 0.50 M KCl?

Accepted Answer

A)  0.25 
B)  0.50 
C)  1.0 
D)  2.0 
A)  0.25 
B)  0.50 
C)  1.0 
D)  2.0

Question 9

Which of the following is true regarding the solubility of gases in liquids?

Accepted Answer

A)  Solubility decreases as temperature increases. 
B)  Solubility increases as temperature increases. 
C)  Solubility is unaffected by changes in temperature. 
A)  Solubility decreases as temperature increases. 
B)  Solubility increases as temperature increases. 
C)  Solubility is unaffected by changes in temperature.

Question 10

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

Question 11

Which of the following will have the highest electrical conductance?

Accepted Answer

A)  0.1 M KCl 
B)  0.2 M KCl 
C)  0.1 M CH3COOH 
D)  0.2 M CH3COOH 
A)  0.1 M KCl 
B)  0.2 M KCl 
C)  0.1 M CH3COOH 
D)  0.2 M CH3COOH

Question 12

Which of these properties makes water a good solvent?

Accepted Answer

A)  low boiling point 
B)  high specific heat 
C)  high surface tension 
D)  hydrogen bonding ability 
A)  low boiling point 
B)  high specific heat 
C)  high surface tension 
D)  hydrogen bonding ability

Question 13

Which of the following happens when NaCl dissolves in water?

Accepted Answer

A)  The chloride ions attract the negative poles of water molecules. 
B)  Sodium and chloride ions form covalent bonds with water molecules. 
C)  The sodium ions attract the negative poles of water molecules. 
D)  The sodium ions attract the positive poles of water molecules. 
A)  The chloride ions attract the negative poles of water molecules. 
B)  Sodium and chloride ions form covalent bonds with water molecules. 
C)  The sodium ions attract the negative poles of water molecules. 
D)  The sodium ions attract the positive poles of water molecules.

Question 14

Which of the following is true when comparing a dialysis membrane with an osmotic semipermeable membrane?

Accepted Answer

A)  Both membranes allow solvent particles to pass through. 
B)  An osmotic semipermeable membrane has larger openings than a dialysis membrane. 
C)  Both membranes allow solvent particles to pass through and an osmotic semipermeable membrane has larger openings than a dialysis membrane. 
D)  None of these are true. 
A)  Both membranes allow solvent particles to pass through. 
B)  An osmotic semipermeable membrane has larger openings than a dialysis membrane. 
C)  Both membranes allow solvent particles to pass through and an osmotic semipermeable membrane has larger openings than a dialysis membrane. 
D)  None of these are true.

Question 15

A student is preparing a sugar-water solution to make rock candy. When the student continues to add sugar to the solution, no additional sugar dissolves. Which kind of solution is the student preparing?

Accepted Answer

A)  The student is preparing a saturated solution. 
B)  The student is preparing a supersaturated solution. 
C)  The student is preparing an unsaturated solution. 
D)  We cannot tell if the student is preparing a saturated, a supersaturated, or an unsaturated solution. 
A)  The student is preparing a saturated solution. 
B)  The student is preparing a supersaturated solution. 
C)  The student is preparing an unsaturated solution. 
D)  We cannot tell if the student is preparing a saturated, a supersaturated, or an unsaturated solution.

Question 16

For which of the following types of compounds is water generally a good solvent?

Accepted Answer

A)  nonpolar compounds 
B)  polar compounds 
C)  both nonpolar and polar compounds 
D)  neither nonpolar or polar compounds 
A)  nonpolar compounds 
B)  polar compounds 
C)  both nonpolar and polar compounds 
D)  neither nonpolar or polar compounds

Question 17

For which of the following types of solutions is the concentration unit %(v/v) used?

Accepted Answer

A)  solid in solid 
B)  liquid in liquid 
C)  solid in liquid 
D)  gas in gas 
A)  solid in solid 
B)  liquid in liquid 
C)  solid in liquid 
D)  gas in gas

Exam 6: Solutions and Colloids

Which of the following are intermediates between homogenous and heterogeneous mixtures?

Which of the following is a solution?

Why is the osmotic pressure of the dialysis solution adjusted in hemodialysis?

Saline solutions (NaCl in water) used to deliver intravenous drugs are 0.89%(w/v). What mass of NaCl is found in 500.0 mL of such a solution?

Which of the following takes place when HCl(g) dissolves in water?

What is the approximate residual concentration of salt in the drinking water produced by the reverse osmosis of sea water?

How many moles of solute are contained in 500.0 mL of 0.50 M KCl?

Which of the following is true regarding the solubility of gases in liquids?

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

Which of the following will have the highest electrical conductance?

Which of these properties makes water a good solvent?

Which of the following happens when NaCl dissolves in water?

Which of the following is true when comparing a dialysis membrane with an osmotic semipermeable membrane?

A student is preparing a sugar-water solution to make rock candy. When the student continues to add sugar to the solution, no additional sugar dissolves. Which kind of solution is the student preparing?

For which of the following types of compounds is water generally a good solvent?

For which of the following types of solutions is the concentration unit %(v/v) used?

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