Question 1

How many moles of KCl are present in 50.0 mL of a 0.552 M solution?

Accepted Answer

A) 0.0276 mol 
B) 0.0906 mol 
C) 11.0 mol 
D) 35.2 mol 
E) 50.6 mol 
A) 0.0276 mol 
B) 0.0906 mol 
C) 11.0 mol 
D) 35.2 mol 
E) 50.6 mol

Question 2

A student needs to prepare 250.0 mL of a 2.50 M HCl solution using the stock solution 12.0 M HCl.What volume of 12.0 M HCl is required for this dilution?

Accepted Answer

A) 12.0 mL 
B) 25.0 mL 
C) 52.1 mL 
D) 5.21 mL 
E) 2.50 mL 
A) 12.0 mL 
B) 25.0 mL 
C) 52.1 mL 
D) 5.21 mL 
E) 2.50 mL

Question 3

Which statement concerning solution concentration is FALSE?

Accepted Answer

A) An unsaturated solution contains less than the maximum amount of solute that can be dissolved in the solvent. 
B) A saturated solution contains more than 100 g of dissolved solute. 
C) The concentration of a saturated solution is equal to the solubility of the solute. 
D) A solution can be made less concentrated by adding additional solvent. 
E) The molarity of a solution is the number of moles of solute present in one liter of the solution. 
A) An unsaturated solution contains less than the maximum amount of solute that can be dissolved in the solvent. 
B) A saturated solution contains more than 100 g of dissolved solute. 
C) The concentration of a saturated solution is equal to the solubility of the solute. 
D) A solution can be made less concentrated by adding additional solvent. 
E) The molarity of a solution is the number of moles of solute present in one liter of the solution.

Question 4

A student mixes 4.0 g of KNO3 with 5.0 mL of water at room temperature,and observes that most,but not all,of the KNO3 has dissolved.Which statement concerning this solution is TRUE?

Accepted Answer

A) The solution is considered supersaturated,since no additional KNO3 will dissolve. 
B) The solution is considered unsaturated,since not all of the KNO3 dissolved. 
C) The solubility of KNO3 in water has been exceeded. 
D) KNO3 is a water insoluble ionic compound. 
E) In order to get the additional KNO3 to dissolve,the student can add more solute. 
A) The solution is considered supersaturated,since no additional KNO3 will dissolve. 
B) The solution is considered unsaturated,since not all of the KNO3 dissolved. 
C) The solubility of KNO3 in water has been exceeded. 
D) KNO3 is a water insoluble ionic compound. 
E) In order to get the additional KNO3 to dissolve,the student can add more solute.

Question 5

What is the boiling point of a 1.5 m solution of NaCl? [kb = 0.52°C/m]

Accepted Answer

A) 100.78°C 
B) 99.22°C 
C) 98.44°C 
D) 100.52°C 
E) 101.56°C 
A) 100.78°C 
B) 99.22°C 
C) 98.44°C 
D) 100.52°C 
E) 101.56°C

Question 6

A typical blood serum concentration of $\mathrm { HPO } _ { 4 } ^ { 2 - }$    is 2 meq/L.What is the concentration of this ion expressed in mol/L?

Accepted Answer

A) 0.001 mol/L 
B) 1 mol/L 
C) 0.002 mol/L 
D) 0.0003 mol/L 
E) 0.004 mol/L 
A) 0.001 mol/L 
B) 1 mol/L 
C) 0.002 mol/L 
D) 0.0003 mol/L 
E) 0.004 mol/L

Question 7

Vitamin D is essential for the normal development of teeth and bones.A tablet of Vitamin D is tested for its solubility in water and benzene.The results are shown in the table below.What is the most appropriate interpretation of the solubility results? $\begin{array}{|l|r|}
\hline \text { water } & \text { benzene }\left(\mathrm{C}_{6} \mathrm{H}_{6}\right) \
\hline \text { insoluble } & \text { soluble } \
\hline
\end{array}$

Accepted Answer

A) Vitamin D is likely a nonpolar substance. 
B) Vitamin D is likely a polar substance. 
C) Vitamin D is likely a bipolar substance. 
D) Vitamin D is likely an ionic compound. 
E) It is impossible to say anything about the polarity of Vitamin D without knowing its structure. 
A) Vitamin D is likely a nonpolar substance. 
B) Vitamin D is likely a polar substance. 
C) Vitamin D is likely a bipolar substance. 
D) Vitamin D is likely an ionic compound. 
E) It is impossible to say anything about the polarity of Vitamin D without knowing its structure.

Question 8

What mass of glucose is contained in 500.0 mL of a 5.00% (m/V)solution?

Accepted Answer

A) 5.00 g 
B) 25.0 g 
C) 250 g 
D) 50.0 g 
E) 55.0 g 
A) 5.00 g 
B) 25.0 g 
C) 250 g 
D) 50.0 g 
E) 55.0 g

Question 9

An aqueous solution containing a nonvolatile solute such as sucrose will boil above 100°C at 1 atm pressure.

Accepted Answer

A) True 
 B)False

How many moles of KCl are present in 50.0 mL of a 0.552 M solution?

A student needs to prepare 250.0 mL of a 2.50 M HCl solution using the stock solution 12.0 M HCl.What volume of 12.0 M HCl is required for this dilution?

Which statement concerning solution concentration is FALSE?

A student mixes 4.0 g of KNO₃ with 5.0 mL of water at room temperature,and observes that most,but not all,of the KNO₃ has dissolved.Which statement concerning this solution is TRUE?

What is the boiling point of a 1.5 m solution of NaCl? [k_b= 0.52°C/m]

A typical blood serum concentration of $\mathrm { HPO } _ { 4 } ^ { 2 - }$ is 2 meq/L.What is the concentration of this ion expressed in mol/L?

Vitamin D is essential for the normal development of teeth and bones.A tablet of Vitamin D is tested for its solubility in water and benzene.The results are shown in the table below.What is the most appropriate interpretation of the solubility results? water benzene insoluble soluble

What mass of glucose is contained in 500.0 mL of a 5.00% (m/V)solution?

An aqueous solution containing a nonvolatile solute such as sucrose will boil above 100°C at 1 atm pressure.

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

Exam 6: Solutions

How many moles of KCl are present in 50.0 mL of a 0.552 M solution?

A student needs to prepare 250.0 mL of a 2.50 M HCl solution using the stock solution 12.0 M HCl.What volume of 12.0 M HCl is required for this dilution?

Which statement concerning solution concentration is FALSE?

A student mixes 4.0 g of KNO3 with 5.0 mL of water at room temperature,and observes that most,but not all,of the KNO3 has dissolved.Which statement concerning this solution is TRUE?

What is the boiling point of a 1.5 m solution of NaCl? [kb = 0.52°C/m]

A typical blood serum concentration of HPO42−\mathrm { HPO } _ { 4 } ^ { 2 - }HPO42−​ is 2 meq/L.What is the concentration of this ion expressed in mol/L?

Vitamin D is essential for the normal development of teeth and bones.A tablet of Vitamin D is tested for its solubility in water and benzene.The results are shown in the table below.What is the most appropriate interpretation of the solubility results? water benzene insoluble soluble

What mass of glucose is contained in 500.0 mL of a 5.00% (m/V)solution?

An aqueous solution containing a nonvolatile solute such as sucrose will boil above 100°C at 1 atm pressure.

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

A student mixes 4.0 g of KNO₃ with 5.0 mL of water at room temperature,and observes that most,but not all,of the KNO₃ has dissolved.Which statement concerning this solution is TRUE?

What is the boiling point of a 1.5 m solution of NaCl? [k_b= 0.52°C/m]

A typical blood serum concentration of $\mathrm { HPO } _ { 4 } ^ { 2 - }$ is 2 meq/L.What is the concentration of this ion expressed in mol/L?