What is the mass percent CH3OH of a 0.256 m CH3OH(aq)solution.

A) 0.819 % B) 0.992 % C) 1.23 % D) 1.29 % E) 1.51 % A) 0.819 % B) 0.992 % C) 1.23 % D) 1.29 % E) 1.51 %

Calculate the freezing point of a solution made from 22.0 g of octane (C8H18)dissolved in 148.0 g of benzene.Benzene freezes at 5.50°C and its Kf value is 5.12°C/m.

A) -1.16°C B) 0.98°C C) 5.49°C D) 6.66°C E) 12.2°C A) -1.16°C B) 0.98°C C) 5.49°C D) 6.66°C E) 12.2°C

Exam 12: Physical Properties of Solutions

The vapor pressure of water at 45.0 °C is 71.93 mmHg.What is the vapor pressure of water over a solution prepared from 75.0 g of citric acid (C₆H₈O₇)in 0.420 kg of water at this temperature?

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Question 1

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What is the osmotic pressure of a 0.25 M solution of sucrose at 37°C? (R = 0.0821 L.atm/K.mol)

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Question 2

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What is the molarity of a solution that is 7.00% by mass magnesium sulfate and has a density of 1.071 g/mL?

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Question 3

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A 1.35 m solution of NaOCl in water is prepared.What is the mole fraction of the NaOCl?

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Question 4

What is the mass percent CH₃OH of a 0.256 m CH₃OH(aq)solution.

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Question 5

The density of a 20.3 M CH₃OH (methanol)solution is 0.858 g/mL.What is the molality of this solution? H₂O is the solvent.

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Question 6

What is the percent CsCl by mass in a 0.711 M CsCl solution that has a density of 1.091 g/mL?

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Question 7

Some KCl is dissolved in water at 25°C, where it completely dissociates.The vapor pressure of pure water at 25°C is 28.3 mmHg.Estimate the mass in grams of KCl needed per liter of pure water to reduce the vapor pressure of water at 25°C by 5%.

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Question 8

What is the osmotic pressure of a solution prepared from 13.7 g of the electrolyte HCl and enough water to make 0.500 L of solution at 18°C?

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Question 9

To interconvert the concentration units of molality (m)and mass percent, you must also know the density of the solution.

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Question 10

Calculate the mole fraction of KI in a solution made by dissolving 3.4 g of KI in 5.8 g of water.

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Question 11

A solution that contains 55.0 g of ascorbic acid (VitaminC)in 250.g of water freezes at -2.34°C.Calculate the molar mass (in units of g/mol)of the solute.K_f of water is 1.86°C/m.

(Multiple Choice)

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Question 12

Calculate the freezing point of a solution made from 22.0 g of octane (C₈H₁₈)dissolved in 148.0 g of benzene.Benzene freezes at 5.50°C and its K_f value is 5.12°C/m.

(Multiple Choice)

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Question 13

The vapor pressure of a solution depends on the chemical nature of the non-volatile solute

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Question 14

Using your knowledge of osmosis or osmotic pressure explain the following statement: Meat that is salted before cooking tends to dry out.

(Essay)

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Question 15

The solubility of gases in water usually increases with

(Multiple Choice)

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Question 16

Determine the mass percent HCl in a 1.2 M solution of hydrochloric acid with a density of 1.019 g/mL?

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Question 17

Assuming 100% dissociation, which of the following compounds is listed incorrectly with its van't Hoff factor i?

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Question 18

The vapor pressure of water at 20°C is 17.5 mmHg.What is the vapor pressure of water over a solution prepared from 2.00 × 10² g of sucrose (C₁₂H₂₂O₁₁)and 3.50 × 10² g water?

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Question 19

What is the boiling point of an aqueous solution of a nonelectrolyte that has an osmotic pressure of 10.50 atm at 25°C? K_b of water is 0.52°C/m.Assume the density of the solution is the same as that of pure water.

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Question 20

Showing 1 - 20 of 122

Exam 12: Physical Properties of Solutions

The vapor pressure of water at 45.0 °C is 71.93 mmHg.What is the vapor pressure of water over a solution prepared from 75.0 g of citric acid (C6H8O7)in 0.420 kg of water at this temperature?

What is the osmotic pressure of a 0.25 M solution of sucrose at 37°C? (R = 0.0821 L.atm/K.mol)

What is the molarity of a solution that is 7.00% by mass magnesium sulfate and has a density of 1.071 g/mL?

A 1.35 m solution of NaOCl in water is prepared.What is the mole fraction of the NaOCl?

What is the mass percent CH3OH of a 0.256 m CH3OH(aq)solution.

The density of a 20.3 M CH3OH (methanol)solution is 0.858 g/mL.What is the molality of this solution? H2O is the solvent.

What is the percent CsCl by mass in a 0.711 M CsCl solution that has a density of 1.091 g/mL?

Some KCl is dissolved in water at 25°C, where it completely dissociates.The vapor pressure of pure water at 25°C is 28.3 mmHg.Estimate the mass in grams of KCl needed per liter of pure water to reduce the vapor pressure of water at 25°C by 5%.

What is the osmotic pressure of a solution prepared from 13.7 g of the electrolyte HCl and enough water to make 0.500 L of solution at 18°C?

To interconvert the concentration units of molality (m)and mass percent, you must also know the density of the solution.

Calculate the mole fraction of KI in a solution made by dissolving 3.4 g of KI in 5.8 g of water.

A solution that contains 55.0 g of ascorbic acid (VitaminC)in 250.g of water freezes at -2.34°C.Calculate the molar mass (in units of g/mol)of the solute.Kf of water is 1.86°C/m.

Calculate the freezing point of a solution made from 22.0 g of octane (C8H18)dissolved in 148.0 g of benzene.Benzene freezes at 5.50°C and its Kf value is 5.12°C/m.

The vapor pressure of a solution depends on the chemical nature of the non-volatile solute

Using your knowledge of osmosis or osmotic pressure explain the following statement: Meat that is salted before cooking tends to dry out.

The solubility of gases in water usually increases with

Determine the mass percent HCl in a 1.2 M solution of hydrochloric acid with a density of 1.019 g/mL?

Assuming 100% dissociation, which of the following compounds is listed incorrectly with its van't Hoff factor i?

The vapor pressure of water at 20°C is 17.5 mmHg.What is the vapor pressure of water over a solution prepared from 2.00 × 102 g of sucrose (C12H22O11)and 3.50 × 102 g water?

What is the boiling point of an aqueous solution of a nonelectrolyte that has an osmotic pressure of 10.50 atm at 25°C? Kb of water is 0.52°C/m.Assume the density of the solution is the same as that of pure water.

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The vapor pressure of water at 45.0 °C is 71.93 mmHg.What is the vapor pressure of water over a solution prepared from 75.0 g of citric acid (C₆H₈O₇)in 0.420 kg of water at this temperature?

What is the mass percent CH₃OH of a 0.256 m CH₃OH(aq)solution.

The density of a 20.3 M CH₃OH (methanol)solution is 0.858 g/mL.What is the molality of this solution? H₂O is the solvent.

A solution that contains 55.0 g of ascorbic acid (VitaminC)in 250.g of water freezes at -2.34°C.Calculate the molar mass (in units of g/mol)of the solute.K_f of water is 1.86°C/m.

Calculate the freezing point of a solution made from 22.0 g of octane (C₈H₁₈)dissolved in 148.0 g of benzene.Benzene freezes at 5.50°C and its K_f value is 5.12°C/m.

The vapor pressure of water at 20°C is 17.5 mmHg.What is the vapor pressure of water over a solution prepared from 2.00 × 10² g of sucrose (C₁₂H₂₂O₁₁)and 3.50 × 10² g water?

What is the boiling point of an aqueous solution of a nonelectrolyte that has an osmotic pressure of 10.50 atm at 25°C? K_b of water is 0.52°C/m.Assume the density of the solution is the same as that of pure water.