Question 1

Which of the following can pass through a dialysis membrane?

Accepted Answer

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

Question 2

For which of the following types of molecules is water likely to be a poor solvent?

Accepted Answer

A)  molecules that can form hydrogen bonds with water 
B)  nonpolar molecules 
C)  polar molecules 
D)  none of these 
A)  molecules that can form hydrogen bonds with water 
B)  nonpolar molecules 
C)  polar molecules 
D)  none of these

Question 3

A typical sample of brass is 67%(w/w) copper and 33%(w/w) zinc and has a density of 8.40 g/mL. What is the molarity of this solution?

Accepted Answer

A)  33 M 
B)  42 M 
C)  88 M 
D)  67 M 
A)  33 M 
B)  42 M 
C)  88 M 
D)  67 M

Question 4

What happens when glucose, C6H12O6, dissolves in water?

Accepted Answer

A)  It dissociates into ions. 
B)  It forms covalent bonds with water. 
C)  It forms hydrogen bonds with water. 
D)  None of these are correct as it does not dissolve in water. 
A)  It dissociates into ions. 
B)  It forms covalent bonds with water. 
C)  It forms hydrogen bonds with water. 
D)  None of these are correct as it does not dissolve in water.

Question 5

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

Accepted Answer

A)  cheese 
B)  mayonnaise 
C)  smoke 
D)  jelly 
A)  cheese 
B)  mayonnaise 
C)  smoke 
D)  jelly

Question 6

Assuming that the volumes are additive, what volume of water must be added to 35.0 mL of 12.0 M HCl to make a 3.00 M solution?

Accepted Answer

A)  70.0 mL 
B)  87.5 mL 
C)  105 mL 
D)  140 mL 
A)  70.0 mL 
B)  87.5 mL 
C)  105 mL 
D)  140 mL

Question 7

Which of the following is true of electrolytes?

Accepted Answer

A)  Strong electrolytes dissociate completely into ions. 
B)  Strong electrolytes dissociate partially into ions. 
C)  Weak electrolytes dissociate completely into ions. 
D)  Strong electrolytes do not conduct electricity. 
A)  Strong electrolytes dissociate completely into ions. 
B)  Strong electrolytes dissociate partially into ions. 
C)  Weak electrolytes dissociate completely into ions. 
D)  Strong electrolytes do not conduct electricity.

Question 8

Which of the following occurs when red blood cells are placed 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 9

Which of the following concentration units can be used when only the masses of the solute and the solution are known?

Accepted Answer

A)  %(w/w) 
B)  %(w/v) 
C)  %(v/v) 
D)  M 
A)  %(w/w) 
B)  %(w/v) 
C)  %(v/v) 
D)  M

Question 10

Which of the following pairs of liquids is miscible in all proportions?

Accepted Answer

A)  ethanol and water 
B)  ethanol and oil 
C)  gasoline and water 
D)  none of these 
A)  ethanol and water 
B)  ethanol and oil 
C)  gasoline and water 
D)  none of these

Question 11

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

Accepted Answer

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

Question 12

Which of the following is true of all strong electrolytes?

Accepted Answer

A)  All of them are insoluble in water. 
B)  All of them completely dissociate into ions. 
C)  All of them are insoluble in water and all of them completely dissociate into ions. 
D)  None of these are true. 
A)  All of them are insoluble in water. 
B)  All of them completely dissociate into ions. 
C)  All of them are insoluble in water and all of them completely dissociate into ions. 
D)  None of these are true.

Question 13

To which of the following solvent-solute combinations does the term "alloy" apply?

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 14

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 15

Which of the following solutions is isotonic with a 0.15 M NaCl solution?

Accepted Answer

A)  0.15 M glucose, C6H12O6 
B)  0.30 M glucose, C6H12O6 
C)  0.10 M aluminum chloride, AlCl3 
D)  none of these 
A)  0.15 M glucose, C6H12O6 
B)  0.30 M glucose, C6H12O6 
C)  0.10 M aluminum chloride, AlCl3 
D)  none of these

Question 16

Which of the following will have the highest electrical conductance?

Accepted Answer

A)  0.1 M NaCl 
B)  0.2 M NaCl 
C)  0.3 M CH3COOH 
D)  0.4 M CH3COOH 
A)  0.1 M NaCl 
B)  0.2 M NaCl 
C)  0.3 M CH3COOH 
D)  0.4 M CH3COOH

Question 17

Which of the following factors causes colloidal particles to remain in solution without settling?

Accepted Answer

A)  Colloidal particles acquire charges on their large surface areas. 
B)  Colloidal particles have large solvation layers. 
C)  Colloidal particles acquire charges on their large surface areas and have large solvation layers. 
D)  None of these 
A)  Colloidal particles acquire charges on their large surface areas. 
B)  Colloidal particles have large solvation layers. 
C)  Colloidal particles acquire charges on their large surface areas and have large solvation layers. 
D)  None of these

Question 18

Which of the following techniques can be used to decrease the stability of an aqueous colloidal dispersion?

Accepted Answer

A)  the addition of an electrolyte 
B)  the dilution of the system by the addition of water 
C)  both the addition of an electrolyte and the dilution of the system by the addition of water 
D)  none of these 
A)  the addition of an electrolyte 
B)  the dilution of the system by the addition of water 
C)  both the addition of an electrolyte and the dilution of the system by the addition of water 
D)  none of these

Question 19

Which statement is true of the solubility of a gas in a liquid?

Accepted Answer

A)  The solubility of the gas in the liquid always decreases as pressure increases. 
B)  The solubility of the gas in the liquid always increases as pressure increases. 
C)  The solubility of the gas in the liquid usually decreases as pressure increases. 
D)  The solubility of the gas in the liquid usually increases as pressure increases. 
A)  The solubility of the gas in the liquid always decreases as pressure increases. 
B)  The solubility of the gas in the liquid always increases as pressure increases. 
C)  The solubility of the gas in the liquid usually decreases as pressure increases. 
D)  The solubility of the gas in the liquid usually increases as pressure increases.

Question 20

Which of the following will have the lowest freezing point?

Accepted Answer

A)  0.1 M NaCl will have the lowest freezing point. 
B)  0.1 M BaCl2 will have the lowest freezing point. 
C)  0.1 M AlCl3 will have the lowest freezing point. 
D)  All of these will have the same freezing point. 
A)  0.1 M NaCl will have the lowest freezing point. 
B)  0.1 M BaCl2 will have the lowest freezing point. 
C)  0.1 M AlCl3 will have the lowest freezing point. 
D)  All of these will have the same freezing point.

Exam 6: Solutions and Colloids

Which of the following can pass through a dialysis membrane?

For which of the following types of molecules is water likely to be a poor solvent?

A typical sample of brass is 67%(w/w) copper and 33%(w/w) zinc and has a density of 8.40 g/mL. What is the molarity of this solution?

What happens when glucose, C6H12O6, dissolves in water?

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

Assuming that the volumes are additive, what volume of water must be added to 35.0 mL of 12.0 M HCl to make a 3.00 M solution?

Which of the following is true of electrolytes?

Which of the following occurs when red blood cells are placed in a hypertonic solution?

Which of the following concentration units can be used when only the masses of the solute and the solution are known?

Which of the following pairs of liquids is miscible in all proportions?

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

Which of the following is true of all strong electrolytes?

To which of the following solvent-solute combinations does the term "alloy" apply?

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

Which of the following solutions is isotonic with a 0.15 M NaCl solution?

Which of the following will have the highest electrical conductance?

Which of the following factors causes colloidal particles to remain in solution without settling?

Which of the following techniques can be used to decrease the stability of an aqueous colloidal dispersion?

Which statement is true of the solubility of a gas in a liquid?

Which of the following will have the lowest freezing point?

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What happens when glucose, C₆H₁₂O₆, dissolves in water?