Question 1

The longer it takes for a substance to dissolve to form a solution,the lower its solubility will be.

Accepted Answer

A) True 
 B)False  False

Question 2

What is the underlying process involved in dialysis?

Accepted Answer

A)  mixtures are homogenous. 
B)  osmosis is due to a difference in solution concentrations. 
C)  pressure is applied to the blood squeezing out the impurities. 
D)  an electrical potential separates the blood from the impurities. 
A)  mixtures are homogenous. 
B)  osmosis is due to a difference in solution concentrations. 
C)  pressure is applied to the blood squeezing out the impurities. 
D)  an electrical potential separates the blood from the impurities. B

Question 3

A solution is made by dissolving a small amount of salt in a beaker of water.The water is referred to as the

Accepted Answer

A)  precipitate. 
B)  filtrate. 
C)  solvent. 
D)  solute. 
A)  precipitate. 
B)  filtrate. 
C)  solvent. 
D)  solute. C

Question 4

The more soluble a substance is,the faster it will dissolve.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following pass through both osmotic and dialysis membranes?

Accepted Answer

A)  solvent molecules 
B)  large molecules 
C)  cations 
D)  anions 
A)  solvent molecules 
B)  large molecules 
C)  cations 
D)  anions

Question 6

Solvents and hydrated ions can usually pass though dialyzing membranes

Accepted Answer

A) True 
 B)False

Question 7

Calculate the number of moles of ZnCl,in 100 mL of 0.300 M solution.

Accepted Answer

A)  3.00 *10-2 
B)  0.300 
C)  30.0 
D)  3.00 
A)  3.00 *10-2 
B)  0.300 
C)  30.0 
D)  3.00

Question 8

How many mL of 6.00 M HCl are needed to prepare 1500 mL of 0.200 M HCl solution?

Accepted Answer

A)  1.80 * 104 
B)  125 
C)  2.00 *10-3 
D)  50.0 
A)  1.80 * 104 
B)  125 
C)  2.00 *10-3 
D)  50.0

Question 9

The cleaning action of soaps and detergents is attributable to

Accepted Answer

A)  their ionic character. 
B)  the long hydrocarbon tail in their structure. 
C)  their ability to dissociate into ions. 
D)  all of the above. 
A)  their ionic character. 
B)  the long hydrocarbon tail in their structure. 
C)  their ability to dissociate into ions. 
D)  all of the above.

Question 10

During a surgical procedure,a wound was accidentally irrigated with deionized water,instead of normal saline.What would one expect to happen?

Accepted Answer

A)  There would be a net movement of water into the exposed tissue. 
B)  Water would move out of the exposed tissue. 
C)  Sodium ions would migrate out of the exposed cells. 
D)  There would be no net effect since the solution was added externally. 
A)  There would be a net movement of water into the exposed tissue. 
B)  Water would move out of the exposed tissue. 
C)  Sodium ions would migrate out of the exposed cells. 
D)  There would be no net effect since the solution was added externally.

Question 11

A salt sample is placed into some water and nearly all of it dissolves without stirring or heating.The resulting solution is

Accepted Answer

A)  saturated. 
B)  supersaturated. 
C)  unsaturated. 
D)  impossible to determine. 
A)  saturated. 
B)  supersaturated. 
C)  unsaturated. 
D)  impossible to determine.

Question 12

A 100 mL sample of a saturated CaSO4 solution is evaporated to dryness.The water solvent all evaporates and leaves behind a solid residue of CaSO4 that weighs 0.23 g.The CaSO4 would be classified as

Accepted Answer

A)  insoluble in water. 
B)  slightly soluble in water. 
C)  soluble in water. 
D)  very soluble in water. 
A)  insoluble in water. 
B)  slightly soluble in water. 
C)  soluble in water. 
D)  very soluble in water.

Question 13

Which of the following is not considered a colligative property?

Accepted Answer

A)  vapor pressure 
B)  boiling point 
C)  conductivity 
D)  freezing point 
A)  vapor pressure 
B)  boiling point 
C)  conductivity 
D)  freezing point

Question 14

Dialysis can be used to separate solutions from colloids.

Accepted Answer

A) True 
 B)False

Question 15

Suppose a solution contains 200 g water and 15 g glucose.Which of the following statements is true?

Accepted Answer

A)  Glucose would be classified as the solvent. 
B)  Water would be classified as the solvent. 
C)  Either component could be classified as the solvent. 
D)  More than one response is correct. 
A)  Glucose would be classified as the solvent. 
B)  Water would be classified as the solvent. 
C)  Either component could be classified as the solvent. 
D)  More than one response is correct.

Question 16

An isotonic salt solution is 0.90% (w/w)NaCl in water.How many grams of NaCl are contained in 1.00 kg of such a solution?

Accepted Answer

A)  0.090 
B)  0.90 
C)  9.0 
D)  90 
A)  0.090 
B)  0.90 
C)  9.0 
D)  90

Question 17

Colloids can be stabilized by emulsifying agents.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following tend to stabilize colloids and prevent suspended particles from settling?

Accepted Answer

A)  presence of emulsifying agents 
B)  absorption of charges by colloid particles 
C)  absence of ionic salts 
D)  more than one response is correct 
A)  presence of emulsifying agents 
B)  absorption of charges by colloid particles 
C)  absence of ionic salts 
D)  more than one response is correct

Question 19

Dialysis and osmosis are used for the same purposes.

Accepted Answer

A) True 
 B)False

Question 20

A solution is made by combining 4.00 g of sugar and 100 mL of water (density = 1.00 g/mL).What is the concentration in % w/w?

Accepted Answer

A)  26.0 
B)  4.00 
C)  0.0400 
D)  3.85 
A)  26.0 
B)  4.00 
C)  0.0400 
D)  3.85

Exam 7: Solutions and Colloids

The longer it takes for a substance to dissolve to form a solution,the lower its solubility will be.

What is the underlying process involved in dialysis?

A solution is made by dissolving a small amount of salt in a beaker of water.The water is referred to as the

The more soluble a substance is,the faster it will dissolve.

Which of the following pass through both osmotic and dialysis membranes?

Solvents and hydrated ions can usually pass though dialyzing membranes

Calculate the number of moles of ZnCl,in 100 mL of 0.300 M solution.

How many mL of 6.00 M HCl are needed to prepare 1500 mL of 0.200 M HCl solution?

The cleaning action of soaps and detergents is attributable to

During a surgical procedure,a wound was accidentally irrigated with deionized water,instead of normal saline.What would one expect to happen?

A salt sample is placed into some water and nearly all of it dissolves without stirring or heating.The resulting solution is

A 100 mL sample of a saturated CaSO4 solution is evaporated to dryness.The water solvent all evaporates and leaves behind a solid residue of CaSO4 that weighs 0.23 g.The CaSO4 would be classified as

Which of the following is not considered a colligative property?

Dialysis can be used to separate solutions from colloids.

Suppose a solution contains 200 g water and 15 g glucose.Which of the following statements is true?

An isotonic salt solution is 0.90% (w/w)NaCl in water.How many grams of NaCl are contained in 1.00 kg of such a solution?

Colloids can be stabilized by emulsifying agents.

Which of the following tend to stabilize colloids and prevent suspended particles from settling?

Dialysis and osmosis are used for the same purposes.

A solution is made by combining 4.00 g of sugar and 100 mL of water (density = 1.00 g/mL).What is the concentration in % w/w?

Matter, measurements, and Calculations

Atoms and Molecules

Electronic Structure and the Periodic Law

Forces Between Particles

Chemical Reactions

The States of Matter

Reaction Rates and Equilibrium

Acids,bases,and Salts

Radioactivity and Nuclear Processes

Organic Compounds: Alkanes

Unsaturated Hydrocarbons

Alcohols, phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Esters

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Nucleic Acids and Protein Synthesis

Nutrition and Energy for Life

Carbohydrate Metabolism

Lipid and Amino Acid Metabolism

Body Fluids

Filters

A 100 mL sample of a saturated CaSO₄ solution is evaporated to dryness.The water solvent all evaporates and leaves behind a solid residue of CaSO₄ that weighs 0.23 g.The CaSO₄ would be classified as