Methane has a Henry's Law constant (k) of 9.88 × 10−2 mol/(L·atm) when dissolved in benzene at 25°C. How many grams of CH4 will dissolve in 3.00 L of benzene if the partial pressure of CH4 is 1.48 atm?

A) 0.0667 g B) 0.146 g C) 2.34 g D) 4.83 g E) 7.02 g A) 0.0667 g B) 0.146 g C) 2.34 g D) 4.83 g E) 7.02 g E

Consider the molecular substances I2, H2O, and C8H18. Which of them is/are soluble in CCl4?

A) Only I 2 B) Only H 2O C) Only C 8H 18 D) I 2 and C 8H 18 E) H 2O and C 8H 18 A) Only I 2 B) Only H 2O C) Only C 8H 18 D) I 2 and C 8H 18 E) H 2O and C 8H 18

Exam 13: The Properties of Mixtures: Solutions and Colloids

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Methane has a Henry's Law constant (k) of 9.88 × 10⁻² mol/(L·atm) when dissolved in benzene at 25°C. How many grams of CH₄ will dissolve in 3.00 L of benzene if the partial pressure of CH₄ is 1.48 atm?

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Saccharin, one of the first non-nutritive sweeteners used in soft-drinks, is 500 times sweeter than sugar in dilute aqueous solutions. The solubility of saccharin is 1.00 gram per 290 mL of solution. What is the molarity of a saturated saccharin solution? (ℳ_saccharin = 183.2 g/mol)

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Which of the following sets of conditions could exist when two liquids which are completely miscible in one another are mixed?

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An emulsion is a dispersion consisting of a

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Question 4

The dimensions of typical colloidal particles are of the order of

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Question 5

A 0.100 m K₂SO₄ solution 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 6

Which of the following aqueous liquids will have the lowest freezing point?

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Question 7

Carbon tetrachloride, once widely used in fire extinguishers and as a dry cleaning fluid, has been found to cause liver damage to those exposed to its vapors over long periods of time. What is the boiling point of a solution prepared by dissolving 375 g of sulfur (S₈, ℳ= 256.5 g/mol) in 1250 g of CCl₄? K_b = 5.05°C/m, boiling point of pure CCl₄= 76.7°C?

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Question 8

Raoult's Law relates the vapor pressure of a solvent above a solution to the mole fraction of the solvent and the vapor pressure of the pure solvent.

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Question 9

Diethyl ether has a vapor pressure of 400.0 torr at 18°C. When a sample of benzoic acid is dissolved in ether, the vapor pressure of the solution is 342 torr. What is the mole fraction of benzoic acid in the solution?

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Question 10

Helical segments of protein molecules arise through hydrogen bonding between C=O and N-H groups.

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Question 11

Select the weakest electrolyte from the following set.

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Question 12

Human blood has a molar concentration of solutes of 0.30 M. What is the osmotic pressure of blood at 25°C?

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Question 13

A 0.89% (w/v) sodium chloride solution is referred to as physiological saline solution because it has the same concentration of salts as human blood. What is the molarity of a physiological saline solution?

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Question 14

Select the strongest electrolyte from the following set.

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Question 15

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

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Question 16

Soda drinks bubble when the bottle is opened because

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Question 17

Children under the age of 6 with more than 0.10 ppm of lead in their blood can suffer a reduction in I.Q. or have behavior problems. What is the molality of a solution which contains 0.10 ppm of lead?

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Question 18

Consider the molecular substances I₂, H₂O, and C₈H₁₈. Which of them is/are soluble in CCl₄?

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Question 19

A solution of ethanol (C₂H₆O) in water is sometimes used as a disinfectant. 1.00 L of this solution contains 553 g of ethanol and 335 g of water. What is the molality of the ethanol in this solution?

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Question 20

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Exam 13: The Properties of Mixtures: Solutions and Colloids

Methane has a Henry's Law constant (k) of 9.88 × 10−2 mol/(L·atm) when dissolved in benzene at 25°C. How many grams of CH4 will dissolve in 3.00 L of benzene if the partial pressure of CH4 is 1.48 atm?

Saccharin, one of the first non-nutritive sweeteners used in soft-drinks, is 500 times sweeter than sugar in dilute aqueous solutions. The solubility of saccharin is 1.00 gram per 290 mL of solution. What is the molarity of a saturated saccharin solution? (ℳsaccharin = 183.2 g/mol)

Which of the following sets of conditions could exist when two liquids which are completely miscible in one another are mixed?

An emulsion is a dispersion consisting of a

The dimensions of typical colloidal particles are of the order of

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

Which of the following aqueous liquids will have the lowest freezing point?

Raoult's Law relates the vapor pressure of a solvent above a solution to the mole fraction of the solvent and the vapor pressure of the pure solvent.

Diethyl ether has a vapor pressure of 400.0 torr at 18°C. When a sample of benzoic acid is dissolved in ether, the vapor pressure of the solution is 342 torr. What is the mole fraction of benzoic acid in the solution?

Helical segments of protein molecules arise through hydrogen bonding between C=O and N-H groups.

Select the weakest electrolyte from the following set.

Human blood has a molar concentration of solutes of 0.30 M. What is the osmotic pressure of blood at 25°C?

A 0.89% (w/v) sodium chloride solution is referred to as physiological saline solution because it has the same concentration of salts as human blood. What is the molarity of a physiological saline solution?

Select the strongest electrolyte from the following set.

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

Soda drinks bubble when the bottle is opened because

Children under the age of 6 with more than 0.10 ppm of lead in their blood can suffer a reduction in I.Q. or have behavior problems. What is the molality of a solution which contains 0.10 ppm of lead?

Consider the molecular substances I2, H2O, and C8H18. Which of them is/are soluble in CCl4?

A solution of ethanol (C2H6O) in water is sometimes used as a disinfectant. 1.00 L of this solution contains 553 g of ethanol and 335 g of water. What is the molality of the ethanol in this solution?

Keys to the Study of Chemistry: Definitions, Units, and Problem Solving

The Components of Matter

Stoichiometry of Formulas and Equations

Three 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

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 Reaction Direction

Electrochemistry: Chemical Change and Electrical Work

The Elements in Nature and Industry

Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

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Methane has a Henry's Law constant (k) of 9.88 × 10⁻² mol/(L·atm) when dissolved in benzene at 25°C. How many grams of CH₄ will dissolve in 3.00 L of benzene if the partial pressure of CH₄ is 1.48 atm?

Saccharin, one of the first non-nutritive sweeteners used in soft-drinks, is 500 times sweeter than sugar in dilute aqueous solutions. The solubility of saccharin is 1.00 gram per 290 mL of solution. What is the molarity of a saturated saccharin solution? (ℳ_saccharin = 183.2 g/mol)

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

Consider the molecular substances I₂, H₂O, and C₈H₁₈. Which of them is/are soluble in CCl₄?

A solution of ethanol (C₂H₆O) in water is sometimes used as a disinfectant. 1.00 L of this solution contains 553 g of ethanol and 335 g of water. What is the molality of the ethanol in this solution?