A) is observed in concentrated solutions. B) is observed only in dilute solutions. C) is observed in colloidal dispersions. D) is caused by Brownian motion. E) is used to determine the osmotic pressure of solutions. A) is observed in concentrated solutions. B) is observed only in dilute solutions. C) is observed in colloidal dispersions. D) is caused by Brownian motion. E) is used to determine the osmotic pressure of solutions.

A saturated solution of carbon dioxide in water contains 3.00 g of CO2 when the CO2 partial pressure is 8.0 atm. What mass of CO2 will escape if the partial pressure is lowered to 3.2 atm?

A) 0.90 g B) 1.20 g C) 1.40 g D) 1.80 g E) 2.20 g A) 0.90 g B) 1.20 g C) 1.40 g D) 1.80 g E) 2.20 g

A 2.0% (w/v) solution of sodium hydrogen citrate, Na2C6H6O7, which also contains 2.5% (w/v) of dextrose, C6H12O6, is used as an anticoagulant for blood which is to be used for transfusions. What is the molarity of the sodium hydrogen citrate in the solution?

A) 0.085 M B) 0.19 M C) 0.53 M D) 1.2 M E) 1.3 M A) 0.085 M B) 0.19 M C) 0.53 M D) 1.2 M E) 1.3 M

Exam 13: The Properties of Mixtures: Solutions and Colloids

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Benzaldehyde ( = 106.1 g/mol), also known as oil of almonds, is used in the manufacture of dyes and perfumes and in flavorings. What would be the freezing point of a solution prepared by dissolving 75.00 g of benzaldehyde in 850.0 g of ethanol? K_f = 1.99°C/m, freezing point of pure ethanol = -117.3°C.

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Question 81

Colligative properties depend on

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Question 82

List five important intermolecular forces that operate in globular proteins, and explain what parts of the molecule are involved in these forces.

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Question 83

The Tyndall effect

(Multiple Choice)

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Question 84

The chemist, Anna Lytic, must prepare 1.00 kg of 15.0% (w/w) acetic acid using a stock solution which is 36.0% (w/w) acetic acid (d = 1.045 g/mL). Which of the following combinations will give her the solution she wants?

(Multiple Choice)

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Question 85

A saturated solution of carbon dioxide in water contains 3.00 g of CO₂ when the CO₂ partial pressure is 8.0 atm. What mass of CO₂ will escape if the partial pressure is lowered to 3.2 atm?

(Multiple Choice)

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Question 86

If a solute dissolves in an endothermic process

(Multiple Choice)

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Question 87

Which of the following aqueous solutions should demonstrate the most ideal behavior?

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Question 88

A 2.0% (w/v) solution of sodium hydrogen citrate, Na₂C₆H₆O₇, which also contains 2.5% (w/v) of dextrose, C₆H₁₂O₆, is used as an anticoagulant for blood which is to be used for transfusions. What is the molarity of the sodium hydrogen citrate in the solution?

(Multiple Choice)

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Question 89

Calculate the molarity of a solution prepared by diluting 1.85 L of 6.5 M KOH to 11.0 L.

(Multiple Choice)

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Question 90

When two pure substances are mixed to form a solution

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Question 91

What is the mole fraction of Ar in a mixture containing 10.1 g of Ne, 79.9 g of Ar, and 83.8 g of Kr?

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Question 92

The heat of solution is the total enthalpy change when a solution is formed from the separated solute and solvent.

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Question 93

If the shell of a raw egg is carefully dissolved away, and the egg in its flexible membrane is then placed in distilled water, the egg's volume will expand. Explain.

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Question 94

The vapor pressure of pure acetone (propanone) is 266 torr. When a non-volatile solute is added, the vapor pressure of acetone above the solution falls to 232 torr. What is the mole fraction of the non-volatile solute in the solution?

(Multiple Choice)

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Question 95

Determine the freezing point of a solution which contains 0.31 mol of sucrose in 175 g of water. K_f = 1.86°C/m

(Multiple Choice)

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Question 96

How many moles of solute particles are present in 100.0 mL of 2.50 M (NH₄)₃PO₄?

(Multiple Choice)

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Question 97

A 0.100 m K₂SO₄solution has a freezing point of -0.43°C. What is the van't Hoff factor for this solution? K_f = 1.86°C/m

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Question 98

Hexachlorophene is used as a disinfectant in germicidal soaps. What mass of hexachlorophene ( = 406.9 g/mol) must be added to 125 g of chloroform to give a solution with a boiling point of 62.60°C? K_b = 3.63°C/m, boiling point of pure chloroform = 61.70°C

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Question 99

The solubility of the oxidizing agent potassium permanganate is 7.1 g per 100.0 g of water at 25°C. What is the mole fraction of potassium permanganate in this solution?

(Multiple Choice)

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Question 100

Showing 81 - 100 of 105

Exam 13: The Properties of Mixtures: Solutions and Colloids

Colligative properties depend on

List five important intermolecular forces that operate in globular proteins, and explain what parts of the molecule are involved in these forces.

The Tyndall effect

The chemist, Anna Lytic, must prepare 1.00 kg of 15.0% (w/w) acetic acid using a stock solution which is 36.0% (w/w) acetic acid (d = 1.045 g/mL). Which of the following combinations will give her the solution she wants?

A saturated solution of carbon dioxide in water contains 3.00 g of CO2 when the CO2 partial pressure is 8.0 atm. What mass of CO2 will escape if the partial pressure is lowered to 3.2 atm?

If a solute dissolves in an endothermic process

Which of the following aqueous solutions should demonstrate the most ideal behavior?

A 2.0% (w/v) solution of sodium hydrogen citrate, Na2C6H6O7, which also contains 2.5% (w/v) of dextrose, C6H12O6, is used as an anticoagulant for blood which is to be used for transfusions. What is the molarity of the sodium hydrogen citrate in the solution?

Calculate the molarity of a solution prepared by diluting 1.85 L of 6.5 M KOH to 11.0 L.

When two pure substances are mixed to form a solution

What is the mole fraction of Ar in a mixture containing 10.1 g of Ne, 79.9 g of Ar, and 83.8 g of Kr?

The heat of solution is the total enthalpy change when a solution is formed from the separated solute and solvent.

If the shell of a raw egg is carefully dissolved away, and the egg in its flexible membrane is then placed in distilled water, the egg's volume will expand. Explain.

The vapor pressure of pure acetone (propanone) is 266 torr. When a non-volatile solute is added, the vapor pressure of acetone above the solution falls to 232 torr. What is the mole fraction of the non-volatile solute in the solution?

Determine the freezing point of a solution which contains 0.31 mol of sucrose in 175 g of water. Kf = 1.86°C/m

How many moles of solute particles are present in 100.0 mL of 2.50 M (NH4)3PO4?

A 0.100 m K2SO4 solution has a freezing point of -0.43°C. What is the van't Hoff factor for this solution? Kf = 1.86°C/m

Hexachlorophene is used as a disinfectant in germicidal soaps. What mass of hexachlorophene ( = 406.9 g/mol) must be added to 125 g of chloroform to give a solution with a boiling point of 62.60°C? Kb = 3.63°C/m, boiling point of pure chloroform = 61.70°C

The solubility of the oxidizing agent potassium permanganate is 7.1 g per 100.0 g of water at 25°C. What is the mole fraction of potassium permanganate in this solution?

Keys to the Study of Chemistry

The Components of Matter

Stoichiometry of Formulas and Equations

The Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry: Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces: Liquids, Solids, and Phase Changes

Periodic Patterns in the Main Group Elements: Bonding, Structure, and Reactivity

Organic Compounds and the Atomic Properties of Carbon

Kinetics: Rates and Mechanisms of Chemical Reactions

Equilibrium: the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics: Entropy, Free Energy, and the Direction of Chemical Reactions

Electrochemistry: Chemical Change and Electrical Work

The Elements in Nature and Industry

The Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

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A saturated solution of carbon dioxide in water contains 3.00 g of CO₂ when the CO₂ partial pressure is 8.0 atm. What mass of CO₂ will escape if the partial pressure is lowered to 3.2 atm?

A 2.0% (w/v) solution of sodium hydrogen citrate, Na₂C₆H₆O₇, which also contains 2.5% (w/v) of dextrose, C₆H₁₂O₆, is used as an anticoagulant for blood which is to be used for transfusions. What is the molarity of the sodium hydrogen citrate in the solution?

Determine the freezing point of a solution which contains 0.31 mol of sucrose in 175 g of water. K_f = 1.86°C/m

How many moles of solute particles are present in 100.0 mL of 2.50 M (NH₄)₃PO₄?

A 0.100 m K₂SO₄solution has a freezing point of -0.43°C. What is the van't Hoff factor for this solution? K_f = 1.86°C/m

Hexachlorophene is used as a disinfectant in germicidal soaps. What mass of hexachlorophene ( = 406.9 g/mol) must be added to 125 g of chloroform to give a solution with a boiling point of 62.60°C? K_b = 3.63°C/m, boiling point of pure chloroform = 61.70°C