The concentration of a benzene solution prepared by mixing 11.0 g C6H6 with 38.0 g CCl4 is __________ molal.

A) 3.71 B) 2.40 C) 0.622 D) 0.289 E) 0.508 A) 3.71 B) 2.40 C) 0.622 D) 0.289 E) 0.508

A solution is prepared by dissolving 16.2 g of benzene (C6H6)in 282 g of carbon tetrachloride (CCl4). The concentration of benzene in this solution is __________ molal. The molar masses of C6H6 and CCl4 are 78.0 g/mol and 154 g/mol, respectively.

A) 7.36 × 10-4 B) 0.736 C) 0.102 D) 0.0543 E) 5.43 A) 7.36 × 10-4 B) 0.736 C) 0.102 D) 0.0543 E) 5.43

The dissolution of water in octane (C8H18)is prevented by __________.

A) London dispersion forces between octane molecules B) hydrogen bonding between water molecules C) dipole-dipole attraction between octane molecules D) ion-dipole attraction between water and octane molecules E) repulsion between like-charged water and octane molecules A) London dispersion forces between octane molecules B) hydrogen bonding between water molecules C) dipole-dipole attraction between octane molecules D) ion-dipole attraction between water and octane molecules E) repulsion between like-charged water and octane molecules

The concentration of lead nitrate (Pb(NO3)2))in a 0.626 M solution is __________ molal. The density of the solution is 1.202 g/mL.

A) 0.521 B) 1.83 C) 0.629 D) 0.819 E) 0.650 A) 0.521 B) 1.83 C) 0.629 D) 0.819 E) 0.650

Exam 13: Properties of Solutions

A solution is prepared by dissolving 23.7 g of CaCl₂ in 375 g of water. The density of the resulting solution is 1.05 g/mL. The mole fraction of Cl^- in this solution is __________ M.

(Multiple Choice)

4.9/5

(87)

Question 61

A 0.100 m solution of which one of the following solutes will have the highest vapor pressure?

(Multiple Choice)

4.9/5

(84)

Question 62

The concentration of a benzene solution prepared by mixing 11.0 g C₆H₆ with 38.0 g CCl₄ is __________ molal.

(Multiple Choice)

4.7/5

(88)

Question 63

A solution is prepared by dissolving calcium chloride in water and diluting to 500.0 mL If this solution contains 44 ppm chloride ions, the concentration of calcium ions is __________ ppm.

(Multiple Choice)

4.8/5

(70)

Question 64

Hydration is a specific example of the phenomenon known generally as __________.

(Multiple Choice)

4.9/5

(81)

Question 65

A solution is prepared by dissolving 16.2 g of benzene (C₆H₆)in 282 g of carbon tetrachloride (CCl₄). The concentration of benzene in this solution is __________ molal. The molar masses of C₆H₆ and CCl₄ are 78.0 g/mol and 154 g/mol, respectively.

(Multiple Choice)

4.9/5

(73)

Question 66

The concentration of KBr in a solution prepared by dissolving 2.13 g of KBr in 897 g of water is __________ molal.

(Multiple Choice)

4.8/5

(94)

Question 67

Of the following, a 0.2 M aqueous solution of __________ will have the highest freezing point.

(Multiple Choice)

4.8/5

(77)

Question 68

A sample of potassium nitrate (49.0 g)is dissolved in 101 g of water at 100°C, with precautions taken to avoid evaporation of any water. The solution is cooled to 30.0°C and no precipitate is observed. This solution is __________.

(Multiple Choice)

4.7/5

(70)

Question 69

At 20°C, an aqueous solution that is 24.0% by mass in ammonium chloride has a density of 1.0674g/mL. What is the molarity of ammonium chloride in the solution? The formula weight of NH₄Cl is 53.50 g/mol.

(Multiple Choice)

4.8/5

(84)

Question 70

Ammonium nitrate (NH₄NO₃)dissolves readily in water even though the dissolution is endothermic by 26.4 kJ/mol. The solution process is spontaneous because __________.

(Multiple Choice)

4.8/5

(80)

Question 71

A solution is prepared by dissolving 15.0 g of NH₃ in 250.0 g of water. The density of the resulting solution is 0.974 g/mL. The molality of NH₃ in the solution is __________.

(Multiple Choice)

4.8/5

(76)

Question 72

The magnitudes of K_f and of K_b depend on the identity of the __________.

(Multiple Choice)

4.9/5

(72)

Question 73

A solution contains 150.8 grams of NaCl in 678.3 grams of water. Calculate the vapor pressure lowering (in torr)of the solution at 25.0°C. (Note: The vapor pressure of pure water at 25.0°C is 23.76 torr.)

(Short Answer)

4.9/5

(91)

Question 74

The dissolution of water in octane (C₈H₁₈)is prevented by __________.

(Multiple Choice)

4.8/5

(86)

Question 75

A solution is prepared by adding 30.00 g of lactose (milk sugar)to 110.0 g of water at 55°C. The partial pressure of water above the solution is __________ torr. The vapor pressure of pure water at 55°C is 118.0 torr. The MW of lactose is 342.3 g/mol.

(Multiple Choice)

4.9/5

(83)

Question 76

The concentration of lead nitrate (Pb(NO₃)₂))in a 0.626 M solution is __________ molal. The density of the solution is 1.202 g/mL.

(Multiple Choice)

4.8/5

(60)

Question 77

Calculate the molarity of a 17.5% (by mass)aqueous solution of nitric acid.

(Multiple Choice)

4.9/5

(80)

Question 78

The dissolution of gases in water is virtually always exothermic because __________.

(Multiple Choice)

4.9/5

(81)

Question 79

Hydrophobic colloids __________.

(Multiple Choice)

4.9/5

(77)

Question 80

Showing 61 - 80 of 151

Exam 13: Properties of Solutions

A solution is prepared by dissolving 23.7 g of CaCl2 in 375 g of water. The density of the resulting solution is 1.05 g/mL. The mole fraction of Cl- in this solution is __________ M.

A 0.100 m solution of which one of the following solutes will have the highest vapor pressure?

The concentration of a benzene solution prepared by mixing 11.0 g C6H6 with 38.0 g CCl4 is __________ molal.

A solution is prepared by dissolving calcium chloride in water and diluting to 500.0 mL If this solution contains 44 ppm chloride ions, the concentration of calcium ions is __________ ppm.

Hydration is a specific example of the phenomenon known generally as __________.

A solution is prepared by dissolving 16.2 g of benzene (C6H6)in 282 g of carbon tetrachloride (CCl4). The concentration of benzene in this solution is __________ molal. The molar masses of C6H6 and CCl4 are 78.0 g/mol and 154 g/mol, respectively.

The concentration of KBr in a solution prepared by dissolving 2.13 g of KBr in 897 g of water is __________ molal.

Of the following, a 0.2 M aqueous solution of __________ will have the highest freezing point.

A sample of potassium nitrate (49.0 g)is dissolved in 101 g of water at 100°C, with precautions taken to avoid evaporation of any water. The solution is cooled to 30.0°C and no precipitate is observed. This solution is __________.

At 20°C, an aqueous solution that is 24.0% by mass in ammonium chloride has a density of 1.0674g/mL. What is the molarity of ammonium chloride in the solution? The formula weight of NH4Cl is 53.50 g/mol.

Ammonium nitrate (NH4NO3)dissolves readily in water even though the dissolution is endothermic by 26.4 kJ/mol. The solution process is spontaneous because __________.

A solution is prepared by dissolving 15.0 g of NH3 in 250.0 g of water. The density of the resulting solution is 0.974 g/mL. The molality of NH3 in the solution is __________.

The magnitudes of Kf and of Kb depend on the identity of the __________.

A solution contains 150.8 grams of NaCl in 678.3 grams of water. Calculate the vapor pressure lowering (in torr)of the solution at 25.0°C. (Note: The vapor pressure of pure water at 25.0°C is 23.76 torr.)

The dissolution of water in octane (C8H18)is prevented by __________.

A solution is prepared by adding 30.00 g of lactose (milk sugar)to 110.0 g of water at 55°C. The partial pressure of water above the solution is __________ torr. The vapor pressure of pure water at 55°C is 118.0 torr. The MW of lactose is 342.3 g/mol.

The concentration of lead nitrate (Pb(NO3)2))in a 0.626 M solution is __________ molal. The density of the solution is 1.202 g/mL.

Calculate the molarity of a 17.5% (by mass)aqueous solution of nitric acid.

The dissolution of gases in water is virtually always exothermic because __________.

Hydrophobic colloids __________.

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

A solution is prepared by dissolving 23.7 g of CaCl₂ in 375 g of water. The density of the resulting solution is 1.05 g/mL. The mole fraction of Cl^- in this solution is __________ M.

The concentration of a benzene solution prepared by mixing 11.0 g C₆H₆ with 38.0 g CCl₄ is __________ molal.

A solution is prepared by dissolving 16.2 g of benzene (C₆H₆)in 282 g of carbon tetrachloride (CCl₄). The concentration of benzene in this solution is __________ molal. The molar masses of C₆H₆ and CCl₄ are 78.0 g/mol and 154 g/mol, respectively.

At 20°C, an aqueous solution that is 24.0% by mass in ammonium chloride has a density of 1.0674g/mL. What is the molarity of ammonium chloride in the solution? The formula weight of NH₄Cl is 53.50 g/mol.

Ammonium nitrate (NH₄NO₃)dissolves readily in water even though the dissolution is endothermic by 26.4 kJ/mol. The solution process is spontaneous because __________.

A solution is prepared by dissolving 15.0 g of NH₃ in 250.0 g of water. The density of the resulting solution is 0.974 g/mL. The molality of NH₃ in the solution is __________.

The magnitudes of K_f and of K_b depend on the identity of the __________.

The dissolution of water in octane (C₈H₁₈)is prevented by __________.

The concentration of lead nitrate (Pb(NO₃)₂))in a 0.626 M solution is __________ molal. The density of the solution is 1.202 g/mL.