Question 1

Which statement concerning solutions is FALSE?

Accepted Answer

A) A solution is a homogeneous mixture of two or more pure substances. 
B) A solution is composed of a solvent and one or more solutes. 
C) A solution has its components uniformly distributed throughout the mixture. 
D) A solution is likely to form when the solute and the solvent have similar polarities. 
E) A solution forms when the solvent and the solute react to form a new substance with one uniform phase. 
A) A solution is a homogeneous mixture of two or more pure substances. 
B) A solution is composed of a solvent and one or more solutes. 
C) A solution has its components uniformly distributed throughout the mixture. 
D) A solution is likely to form when the solute and the solvent have similar polarities. 
E) A solution forms when the solvent and the solute react to form a new substance with one uniform phase. E

Question 2

The solubility of gases in liquids is highest at

Accepted Answer

A) low temperature and low pressure. 
B) low temperature and high pressure. 
C) high temperature and low pressure. 
D) high temperature and high pressure. 
E) high pressure; temperature is immaterial. 
A) low temperature and low pressure. 
B) low temperature and high pressure. 
C) high temperature and low pressure. 
D) high temperature and high pressure. 
E) high pressure; temperature is immaterial. B

Question 3

The solubility of KBr at 20°C is 60 g/100 g H2O.Increasing the temperature of the solution will likely increase the solubility of KBr.

Accepted Answer

A) True 
 B)False  True

Question 4

A solution contains the label 0.2 M KNO3.What is the correct interpretation of this concentration?

Accepted Answer

A) There are 0.2 moles of KNO3 in 100 mL of water. 
B) There are 0.2 g of KNO3 in 100 mL of solution. 
C) There are 0.2 molecules of KNO3 in 1 L of solution. 
D) There are 0.2 g of KNO3 in 1 L of water. 
E) There are 0.2 moles of KNO3 in 1 L of solution. 
A) There are 0.2 moles of KNO3 in 100 mL of water. 
B) There are 0.2 g of KNO3 in 100 mL of solution. 
C) There are 0.2 molecules of KNO3 in 1 L of solution. 
D) There are 0.2 g of KNO3 in 1 L of water. 
E) There are 0.2 moles of KNO3 in 1 L of solution.

Question 5

What happens when a hypotonic solution is separated from a hypertonic solution by an osmotic membrane?

Accepted Answer

A) Water molecules move from the hypotonic solution to the hypertonic solution. 
B) Solute molecules move from the hypertonic solution to the hypotonic solution. 
C) Water molecules move from the hypertonic solution to the hypotonic solution. 
D) Solute molecules move from the hypotonic solution to the hypertonic solution. 
E) No net movement of solvent or solute molecules occurs,because the osmotic pressure on both sides is equal. 
A) Water molecules move from the hypotonic solution to the hypertonic solution. 
B) Solute molecules move from the hypertonic solution to the hypotonic solution. 
C) Water molecules move from the hypertonic solution to the hypotonic solution. 
D) Solute molecules move from the hypotonic solution to the hypertonic solution. 
E) No net movement of solvent or solute molecules occurs,because the osmotic pressure on both sides is equal.

Question 6

Cardiac arrest victims are sometimes treated by injection of a calcium chloride solution directly into the heart muscle.If 2.0 mL of a 5.0% (m/V)CaCl2 solution is administered to a patient,what mass of CaCl2 was provided?

Accepted Answer

A) 1.0 mg 
B) 10 mg 
C) 0.10 g 
D) 10 g 
E) 2.5 g 
A) 1.0 mg 
B) 10 mg 
C) 0.10 g 
D) 10 g 
E) 2.5 g

Question 7

The solubility of a solute is best described as which of the following?

Accepted Answer

A) the ability of the solute to dissolve in water 
B) the ability of the solute to dissociate into ions when dissolved in water 
C) the mass of solute necessary to dissolve in 1 L of water 
D) the maximum amount of solute that can be dissolved in a specified amount of solvent 
E) the moles of solute that can dissolve in 1 L of solution 
A) the ability of the solute to dissolve in water 
B) the ability of the solute to dissociate into ions when dissolved in water 
C) the mass of solute necessary to dissolve in 1 L of water 
D) the maximum amount of solute that can be dissolved in a specified amount of solvent 
E) the moles of solute that can dissolve in 1 L of solution

Question 8

The heavier the solute molecule is,the greater its effect on the freezing point depression of a solution.

Accepted Answer

A) True 
 B)False

Question 9

Colligative properties depend only on the concentration of solute particles,not on their identity.

Accepted Answer

A) True 
 B)False

Question 10

If 5.20 g of HCl is added to enough distilled water to form 3.00 L of solution,what is the molarity of the solution? [Molecular weight: HCl,36.46 amu]

Accepted Answer

A) 0.0475 M 
B) 0.143 M 
C) 0.428 M 
D) 1.73 M 
E) 2.34 M 
A) 0.0475 M 
B) 0.143 M 
C) 0.428 M 
D) 1.73 M 
E) 2.34 M

Question 11

How many grams of KCl are present in 250.0 mL of a 0.125 M solution? [Molar mass: KCl,74.55 g/mol]

Accepted Answer

A) 9.32 g KCl 
B) 0.0268 g KCl 
C) 37.3 g KCl 
D) 0.146 g KCl 
E) 2.33 g KCl 
A) 9.32 g KCl 
B) 0.0268 g KCl 
C) 37.3 g KCl 
D) 0.146 g KCl 
E) 2.33 g KCl

Question 12

If a solvent is colorless,all of its true solutions will also be colorless.

Accepted Answer

A) True 
 B)False

Question 13

Osmosis is the process that regulates the sodium/potassium ratio in living cells.

Accepted Answer

A) True 
 B)False

Question 14

A solution contains 1.65 g of NaF in a total volume of 150.0 mL.What is its concentration expressed as % (m/V)?

Accepted Answer

A) 0.011% 
B) 1.10% 
C) 11.0% 
D) 110% 
E) 1110% 
A) 0.011% 
B) 1.10% 
C) 11.0% 
D) 110% 
E) 1110%

Question 15

What term is used to describe a solution of lower osmolarity compared to one with a higher osmolarity?

Accepted Answer

A) hyposmotic 
B) hypertonic 
C) isotonic 
D) isosmotic 
E) hypotonic 
A) hyposmotic 
B) hypertonic 
C) isotonic 
D) isosmotic 
E) hypotonic

Question 16

An unopened soda bottle at 25°C contains CO2 gas at 6.2 atm.Calculate the equilibrium concentration of CO2 in the unopened soda bottle.[ $\mathrm { K } _ { \mathrm { CO } _ { 2 } }$ = 3.1 × 10-2 mol/(L•atm)]

Accepted Answer

A) 0.19 mol/L 
B) 200 mol/L 
C) 0.005 mol/L 
D) 19.2 mol/L 
E) 3.1 mol/L 
A) 0.19 mol/L 
B) 200 mol/L 
C) 0.005 mol/L 
D) 19.2 mol/L 
E) 3.1 mol/L

Question 17

What term describes a solution that is in equilibrium with undissolved solute?

Accepted Answer

A) precipitating 
B) aqueous 
C) saturated 
D) unsaturated 
E) supersaturated 
A) precipitating 
B) aqueous 
C) saturated 
D) unsaturated 
E) supersaturated

Question 18

The solubility of KBr at 20°C is 60 g/100 g H2O.Increasing the pressure above the solution will significantly increase the solubility of KBr.

Accepted Answer

A) True 
 B)False

Question 19

Calculate the concentration in % (m/V)of NaCl solution that was made by dissolving 15.0 g of sodium chloride in enough water to make 300.0 mL of solution.

Accepted Answer

A) 50.0% (m/V) 
B) 0.0500% (m/V) 
C) 0.356% (m/V) 
D) 35.6% (m/V) 
E) 5.00% (m/V) 
A) 50.0% (m/V) 
B) 0.0500% (m/V) 
C) 0.356% (m/V) 
D) 35.6% (m/V) 
E) 5.00% (m/V)

Question 20

In normal room lighting,the eye cannot distinguish a true solution from a colloidal one.

Accepted Answer

A) True 
 B)False

Exam 6: Solutions

Which statement concerning solutions is FALSE?

The solubility of gases in liquids is highest at

The solubility of KBr at 20°C is 60 g/100 g H2O.Increasing the temperature of the solution will likely increase the solubility of KBr.

A solution contains the label 0.2 M KNO3.What is the correct interpretation of this concentration?

What happens when a hypotonic solution is separated from a hypertonic solution by an osmotic membrane?

Cardiac arrest victims are sometimes treated by injection of a calcium chloride solution directly into the heart muscle.If 2.0 mL of a 5.0% (m/V)CaCl2 solution is administered to a patient,what mass of CaCl2 was provided?

The solubility of a solute is best described as which of the following?

The heavier the solute molecule is,the greater its effect on the freezing point depression of a solution.

Colligative properties depend only on the concentration of solute particles,not on their identity.

If 5.20 g of HCl is added to enough distilled water to form 3.00 L of solution,what is the molarity of the solution? [Molecular weight: HCl,36.46 amu]

How many grams of KCl are present in 250.0 mL of a 0.125 M solution? [Molar mass: KCl,74.55 g/mol]

If a solvent is colorless,all of its true solutions will also be colorless.

Osmosis is the process that regulates the sodium/potassium ratio in living cells.

A solution contains 1.65 g of NaF in a total volume of 150.0 mL.What is its concentration expressed as % (m/V)?

What term is used to describe a solution of lower osmolarity compared to one with a higher osmolarity?

An unopened soda bottle at 25°C contains CO2 gas at 6.2 atm.Calculate the equilibrium concentration of CO2 in the unopened soda bottle.[ KCO2\mathrm { K } _ { \mathrm { CO } _ { 2 } }KCO2​​ = 3.1 × 10-2 mol/(L•atm)]

What term describes a solution that is in equilibrium with undissolved solute?

The solubility of KBr at 20°C is 60 g/100 g H2O.Increasing the pressure above the solution will significantly increase the solubility of KBr.

Calculate the concentration in % (m/V)of NaCl solution that was made by dissolving 15.0 g of sodium chloride in enough water to make 300.0 mL of solution.

In normal room lighting,the eye cannot distinguish a true solution from a colloidal one.

Chemistry - Methods and Measurement

The Structure of the Atom and the Periodic Table

Structure and Properties of Ionic and Covalent Compounds

Calculations, chemical Changes, and the Chemical Equation

States of Matter: Gases, liquids, and Solids

Energy,rate and Equilibrium

Acids and Bases

The Nucleus, radioactivity, and Nuclear Medicine

An Introduction to Organic Chemistry

The Unsaturated Hydrocarbons: Alkenes, alkynes, and Aromatics

Alcohols, phenols, thiols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Carboxylic Acid Derivatives

Amines and Amides

Carbohydrates

Lipids and Their Functions in Biochemical Systems

Protein Structure and Function

Enzymes

Introduction to Molecular Genetics

Carbohydrate Metabolism

Aerobic Respiration and Energy Production

Fatty Acid Metabolism

Filters

The solubility of KBr at 20°C is 60 g/100 g H₂O.Increasing the temperature of the solution will likely increase the solubility of KBr.

A solution contains the label 0.2 M KNO₃.What is the correct interpretation of this concentration?

Cardiac arrest victims are sometimes treated by injection of a calcium chloride solution directly into the heart muscle.If 2.0 mL of a 5.0% (m/V)CaCl₂ solution is administered to a patient,what mass of CaCl₂ was provided?

An unopened soda bottle at 25°C contains CO₂ gas at 6.2 atm.Calculate the equilibrium concentration of CO₂ in the unopened soda bottle.[ $\mathrm { K } _ { \mathrm { CO } _ { 2 } }$ = 3.1 × 10^-2mol/(L•atm)]

The solubility of KBr at 20°C is 60 g/100 g H₂O.Increasing the pressure above the solution will significantly increase the solubility of KBr.