Question 1

What is the osmotic pressure of a 0.050 M solution of AlCl3 in water that is at 0.00$\degree$C? Consider AlCl3 to be a strong electrolyte.

Accepted Answer

A) 8.5 *102 torr 
B) 1.1 atm 
C) 2.2 atm 
D) 3.4 * 103 torr 
A) 8.5 *102 torr 
B) 1.1 atm 
C) 2.2 atm 
D) 3.4 * 103 torr

Question 2

Which of the following statements relating to a solution is not correct?

Accepted Answer

A) A solution may contain more than one solute. 
B) A solution may contain only one solute. 
C) Water is always the solvent in a solution. 
D) More than one correct response given. 
A) A solution may contain more than one solute. 
B) A solution may contain only one solute. 
C) Water is always the solvent in a solution. 
D) More than one correct response given.

Question 3

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 4

A colligative property

Accepted Answer

A) will only occur for aqueous solutions. 
B) depends only on the number of species added to a solution. 
C) results from increasing vapor pressure as a solute is added to a solvent. 
D) All of the choices. 
A) will only occur for aqueous solutions. 
B) depends only on the number of species added to a solution. 
C) results from increasing vapor pressure as a solute is added to a solvent. 
D) All of the choices.

Question 5

What volume of ethyl alcohol is contained in 35 mL (1 oz.)of 86 proof liquor,which is 43% (v/v)alcohol?

Accepted Answer

A) 30 mL 
B) 43 mL 
C) 15 mL 
D) 37 mL 
A) 30 mL 
B) 43 mL 
C) 15 mL 
D) 37 mL

Question 6

You have a patient who is suffering from the "bends".What gas is in excess in the blood?

Accepted Answer

A) nitrogen 
B) oxygen 
C) helium 
D) all of these 
A) nitrogen 
B) oxygen 
C) helium 
D) all of these

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

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

Accepted Answer

A) True 
 B)False

Question 9

One test to determine if a mixture is a true solution or a colloid is ____.

Accepted Answer

A) physical state of the mixture 
B) boiling point elevation 
C) light scattering 
D) color 
A) physical state of the mixture 
B) boiling point elevation 
C) light scattering 
D) color

Question 10

Compared to pure water,a salt water solution will have a

Accepted Answer

A) lower vapor pressure,freezing point and boiling point. 
B) higher vapor pressure,freezing point and boiling point. 
C) lower vapor pressure and freezing point and a higher boiling point. 
D) higher freezing point and a lower vapor pressure and boiling point. 
A) lower vapor pressure,freezing point and boiling point. 
B) higher vapor pressure,freezing point and boiling point. 
C) lower vapor pressure and freezing point and a higher boiling point. 
D) higher freezing point and a lower vapor pressure and boiling point.

Question 11

Which of the following pairs can produce a homogeneous mixture?

Accepted Answer

A) water and sand 
B) oil and vinegar 
C) vinegar and glucose 
D) calcium carbonate and water 
A) water and sand 
B) oil and vinegar 
C) vinegar and glucose 
D) calcium carbonate and water

Question 12

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 13

The boiling point of a solution of sugar water is

Accepted Answer

A) higher than that of pure solvent. 
B) the same as that of pure solvent. 
C) lower than that of pure solvent. 
D) impossible to determine. 
A) higher than that of pure solvent. 
B) the same as that of pure solvent. 
C) lower than that of pure solvent. 
D) impossible to determine.

Question 14

The vapor pressure of a pure solvent is

Accepted Answer

A) higher than that of a solution. 
B) impossible to determine. 
C) the same as that of a solution. 
D) lower than that of a solution. 
A) higher than that of a solution. 
B) impossible to determine. 
C) the same as that of a solution. 
D) lower than that of a solution.

Question 15

Iodine,I2,is very slightly soluble in water,a polar solvent,but quite soluble in toluene,a nonpolar solvent.What can be inferred about the nature of the I2 molecule?

Accepted Answer

A) It is ionic. 
B) It is polar. 
C) It is nonpolar. 
D) Nothing can be inferred. 
A) It is ionic. 
B) It is polar. 
C) It is nonpolar. 
D) Nothing can be inferred.

Question 16

When preparing a 2.00 M solution of NaCl in water,a volumetric flask could be used to measure the volume of the solution.

Accepted Answer

A) True 
 B)False

Question 17

The %(w/v)of a solution is defined as:

Accepted Answer

A) True 
 B)False

Question 18

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

Question 19

When an ionic substance dissolves,the solvated ions will all always be surrounded by water molecules.

Accepted Answer

A) True 
 B)False

Question 20

Colloids can be stabilized by emulsifying agents.

Accepted Answer

A) True 
 B)False

Exam 7: Solutions and Colloids

What is the osmotic pressure of a 0.050 M solution of AlCl3 in water that is at 0.00 °\degree° C? Consider AlCl3 to be a strong electrolyte.

Which of the following statements relating to a solution is not correct?

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

A colligative property

What volume of ethyl alcohol is contained in 35 mL (1 oz.)of 86 proof liquor,which is 43% (v/v)alcohol?

You have a patient who is suffering from the "bends".What gas is in excess in the blood?

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

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

One test to determine if a mixture is a true solution or a colloid is ____.

Compared to pure water,a salt water solution will have a

Which of the following pairs can produce a homogeneous mixture?

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

The boiling point of a solution of sugar water is

The vapor pressure of a pure solvent is

Iodine,I2,is very slightly soluble in water,a polar solvent,but quite soluble in toluene,a nonpolar solvent.What can be inferred about the nature of the I2 molecule?

When preparing a 2.00 M solution of NaCl in water,a volumetric flask could be used to measure the volume of the solution.

The %(w/v)of a solution is defined as:

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?

When an ionic substance dissolves,the solvated ions will all always be surrounded by water molecules.

Colloids can be stabilized by emulsifying agents.

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

What is the osmotic pressure of a 0.050 M solution of AlCl₃ in water that is at 0.00 $\degree$ C? Consider AlCl₃ to be a strong electrolyte.

Iodine,I₂,is very slightly soluble in water,a polar solvent,but quite soluble in toluene,a nonpolar solvent.What can be inferred about the nature of the I₂ molecule?