Question 1

What is the weight percent of vitamin C in a solution made by dissolving 1.30 g of vitamin C,C6H8O6,in 55.0 g of water?

Accepted Answer

A) 0)195% 
B) 0)242% 
C) 2)31% 
D) 2)36% 
A) 0)195% 
B) 0)242% 
C) 2)31% 
D) 2)36%

Question 2

The Henry's Law constant of methyl bromide,CH3Br,is k = 0.159 mol/(L ∙ atm)at 25°C.What is the solubility of methyl bromide in water at 25°C and at a partial pressure of 250.mm Hg?

Accepted Answer

A) 0)0523 mol/L 
B) 0)329 mol/L 
C) 0)483 mol/L 
D) 39.8 mol/L 
A) 0)0523 mol/L 
B) 0)329 mol/L 
C) 0)483 mol/L 
D) 39.8 mol/L

Question 3

Which ion-dipole interaction results in the larger (more negative)hydration energy?

Accepted Answer

A) diagram (a) 
B) diagram (b) 
C) diagram (c) 
D) diagram (d) 
A) diagram (a) 
B) diagram (b) 
C) diagram (c) 
D) diagram (d)

Question 4

Formaldehyde is a carcinogenic volatile organic compound with a permissible exposure level of 0.75 ppm.At this level,how many grams of formaldehyde are permissible in a 6.0-L breath of air having a density of 1.2 kg/m3?

Accepted Answer

A) 3)8 × 10-2 g formaldehyde 
B) 5)4 × 10-6 g formaldehyde 
C) 3)8 g formaldehyde 
D) 5)4 g formaldehyde 
A) 3)8 × 10-2 g formaldehyde 
B) 5)4 × 10-6 g formaldehyde 
C) 3)8 g formaldehyde 
D) 5)4 g formaldehyde

Question 5

The volume of 0.200 M H2SO4 that contains 5.00 mmol of H+ is ________ mL.

Accepted Answer

Question 6

Chloroform has a boiling point of 61.1°C and dichloromethane has a boiling point of 40.0°C.When 0.100 mol of dichloromethane is added to 0.900 mol of chloroform,the resulting solution will have a boiling point

Accepted Answer

A) between 40.0°C and 61.1°C,but closer to 61.1°C. 
B) between 40.0°C and 61.1°C,but closer to 40.0°C. 
C) greater than 61.1°C. 
D) less than 40.0°C. 
A) between 40.0°C and 61.1°C,but closer to 61.1°C. 
B) between 40.0°C and 61.1°C,but closer to 40.0°C. 
C) greater than 61.1°C. 
D) less than 40.0°C.

Question 7

At a given temperature the vapor pressures of benzene and toluene are 183 mm Hg and 59.2 mm Hg,respectively.Calculate the total vapor pressure over a solution of benzene and toluene with Xbenzene = 0.580.

Accepted Answer

A) 106 mm Hg 
B) 121 mm Hg 
C) 131 mm Hg 
D) 242 mm Hg 
A) 106 mm Hg 
B) 121 mm Hg 
C) 131 mm Hg 
D) 242 mm Hg

Question 8

To make a 0.500 M solution,one could take 0.500 moles of solute and add

Accepted Answer

A) 1)00 L of solvent. 
B) 1)00 kg of solvent. 
C) enough solvent to make 1.00 L of solution. 
D) enough solvent to make 1.00 kg of solution. 
A) 1)00 L of solvent. 
B) 1)00 kg of solvent. 
C) enough solvent to make 1.00 L of solution. 
D) enough solvent to make 1.00 kg of solution.

Question 9

What is the weight percent of vitamin C in a solution made by dissolving 6.50 g of vitamin C,C6H8O6,in 55.0 g of water?

Accepted Answer

A) 0)547% 
B) 1)21% 
C) 10.6% 
D) 11.8% 
A) 0)547% 
B) 1)21% 
C) 10.6% 
D) 11.8%

Question 10

A solution is prepared by dissolving 17.75 g sulfuric acid,H2SO4,in enough water to make exactly 100.0 mL of solution.If the density of the solution is 1.1094 g/mL,what is the weight % H2SO4 in the solution?

Accepted Answer

A) 16.00% 
B) 18.00% 
C) 19.00% 
D) 84.00% 
A) 16.00% 
B) 18.00% 
C) 19.00% 
D) 84.00%

Question 11

Two aqueous solutions,A and B,are separated by a semipermeable membrane.The osmotic pressure of solution A immediately begins to decrease.Which of the following statements is true?

Accepted Answer

A) Solvent molecules are moving from solution B into solution A. 
B) The initial osmotic pressure of solution B is greater than that of solution A. 
C) The solvent molecules are moving from the solution of higher osmotic pressure to that of lower osmotic pressure. 
D) Both B and C are true statements. 
A) Solvent molecules are moving from solution B into solution A. 
B) The initial osmotic pressure of solution B is greater than that of solution A. 
C) The solvent molecules are moving from the solution of higher osmotic pressure to that of lower osmotic pressure. 
D) Both B and C are true statements.

Question 12

An aqueous solution has a normal boiling point of 102.0°C.What is the freezing point of this solution? For water Kb is 0.51°C/m and Kf = 1.86°C/m.

Accepted Answer

A) -0.55°C 
B) -2.0°C 
C) -3.6°C 
D) -7.3°C 
A) -0.55°C 
B) -2.0°C 
C) -3.6°C 
D) -7.3°C

What is the weight percent of vitamin C in a solution made by dissolving 1.30 g of vitamin C,C₆H₈O₆,in 55.0 g of water?

The Henry's Law constant of methyl bromide,CH₃Br,is k = 0.159 mol/(L ∙ atm)at 25°C.What is the solubility of methyl bromide in water at 25°C and at a partial pressure of 250.mm Hg?

Which ion-dipole interaction results in the larger (more negative)hydration energy?

Formaldehyde is a carcinogenic volatile organic compound with a permissible exposure level of 0.75 ppm.At this level,how many grams of formaldehyde are permissible in a 6.0-L breath of air having a density of 1.2 kg/m³?

The volume of 0.200 M H₂SO₄ that contains 5.00 mmol of H⁺ is ________ mL.

Chloroform has a boiling point of 61.1°C and dichloromethane has a boiling point of 40.0°C.When 0.100 mol of dichloromethane is added to 0.900 mol of chloroform,the resulting solution will have a boiling point

At a given temperature the vapor pressures of benzene and toluene are 183 mm Hg and 59.2 mm Hg,respectively.Calculate the total vapor pressure over a solution of benzene and toluene with X_benzene = 0.580.

To make a 0.500 M solution,one could take 0.500 moles of solute and add

What is the weight percent of vitamin C in a solution made by dissolving 6.50 g of vitamin C,C₆H₈O₆,in 55.0 g of water?

A solution is prepared by dissolving 17.75 g sulfuric acid,H₂SO₄,in enough water to make exactly 100.0 mL of solution.If the density of the solution is 1.1094 g/mL,what is the weight % H₂SO₄ in the solution?

Two aqueous solutions,A and B,are separated by a semipermeable membrane.The osmotic pressure of solution A immediately begins to decrease.Which of the following statements is true?

An aqueous solution has a normal boiling point of 102.0°C.What is the freezing point of this solution? For water K_b is 0.51°C/m and K_f = 1.86°C/m.

Chemistry: Matter and Measurement

Atoms, molecules, and Ions

Formulas, equations, and Moles

Reactions in Aqueous Solutions

Periodicity and the Atomic Structure of Atoms

Ionic Bonds and Some Main-Group Chemistry

Covalent Bonds and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids,solids,and Phase Changes

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Hydrogen, oxygen, and Water

The Main-Group Elements

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

Nuclear Chemistry

Organic and Biological Chemistry

Filters

Exam 11: Solutions and Their Properties

What is the weight percent of vitamin C in a solution made by dissolving 1.30 g of vitamin C,C6H8O6,in 55.0 g of water?

The Henry's Law constant of methyl bromide,CH3Br,is k = 0.159 mol/(L ∙ atm)at 25°C.What is the solubility of methyl bromide in water at 25°C and at a partial pressure of 250.mm Hg?

Which ion-dipole interaction results in the larger (more negative)hydration energy?

Formaldehyde is a carcinogenic volatile organic compound with a permissible exposure level of 0.75 ppm.At this level,how many grams of formaldehyde are permissible in a 6.0-L breath of air having a density of 1.2 kg/m3?

The volume of 0.200 M H2SO4 that contains 5.00 mmol of H+ is ________ mL.

Chloroform has a boiling point of 61.1°C and dichloromethane has a boiling point of 40.0°C.When 0.100 mol of dichloromethane is added to 0.900 mol of chloroform,the resulting solution will have a boiling point

At a given temperature the vapor pressures of benzene and toluene are 183 mm Hg and 59.2 mm Hg,respectively.Calculate the total vapor pressure over a solution of benzene and toluene with Xbenzene = 0.580.

To make a 0.500 M solution,one could take 0.500 moles of solute and add

What is the weight percent of vitamin C in a solution made by dissolving 6.50 g of vitamin C,C6H8O6,in 55.0 g of water?

A solution is prepared by dissolving 17.75 g sulfuric acid,H2SO4,in enough water to make exactly 100.0 mL of solution.If the density of the solution is 1.1094 g/mL,what is the weight % H2SO4 in the solution?

Two aqueous solutions,A and B,are separated by a semipermeable membrane.The osmotic pressure of solution A immediately begins to decrease.Which of the following statements is true?

An aqueous solution has a normal boiling point of 102.0°C.What is the freezing point of this solution? For water Kb is 0.51°C/m and Kf = 1.86°C/m.

Chemistry: Matter and Measurement

Atoms, molecules, and Ions

Formulas, equations, and Moles

Reactions in Aqueous Solutions

Periodicity and the Atomic Structure of Atoms

Ionic Bonds and Some Main-Group Chemistry

Covalent Bonds and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids,solids,and Phase Changes

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Hydrogen, oxygen, and Water

The Main-Group Elements

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

Nuclear Chemistry

Organic and Biological Chemistry

Filters

What is the weight percent of vitamin C in a solution made by dissolving 1.30 g of vitamin C,C₆H₈O₆,in 55.0 g of water?

The Henry's Law constant of methyl bromide,CH₃Br,is k = 0.159 mol/(L ∙ atm)at 25°C.What is the solubility of methyl bromide in water at 25°C and at a partial pressure of 250.mm Hg?

Formaldehyde is a carcinogenic volatile organic compound with a permissible exposure level of 0.75 ppm.At this level,how many grams of formaldehyde are permissible in a 6.0-L breath of air having a density of 1.2 kg/m³?

The volume of 0.200 M H₂SO₄ that contains 5.00 mmol of H⁺ is ________ mL.

At a given temperature the vapor pressures of benzene and toluene are 183 mm Hg and 59.2 mm Hg,respectively.Calculate the total vapor pressure over a solution of benzene and toluene with X_benzene = 0.580.

What is the weight percent of vitamin C in a solution made by dissolving 6.50 g of vitamin C,C₆H₈O₆,in 55.0 g of water?

A solution is prepared by dissolving 17.75 g sulfuric acid,H₂SO₄,in enough water to make exactly 100.0 mL of solution.If the density of the solution is 1.1094 g/mL,what is the weight % H₂SO₄ in the solution?

An aqueous solution has a normal boiling point of 102.0°C.What is the freezing point of this solution? For water K_b is 0.51°C/m and K_f = 1.86°C/m.