What is the osmotic pressure generated at 25°C by a solution of 2.50 g of glucose, C6H12O6, in 500 cm3 of water at 298 K?

A) 27.8 kPa B) 68.8 kPa C) 34.4 kPa D) 10.3 kPa A) 27.8 kPa B) 68.8 kPa C) 34.4 kPa D) 10.3 kPa

The Henry's law constant for nitrogen dissolved in water at 298 K is 8.68 F1F1F1S1F1F1F10 109 Pa. Determine the mole fraction of nitrogen in water in equilibrium with air at a pressure of 1 atm and temperature of 298 K.

A) 9.10 ppm B) 11.0 ppm C) 8.98 ppm D) 7.90 ppm A) 9.10 ppm B) 11.0 ppm C) 8.98 ppm D) 7.90 ppm

Exam 17: Phase Equilibrium and Solutions

An ice skater exerts a pressure of 3.1 MPa. Calculate the change in the melting point of the ice under the skate, given that the densities of liquid water and ice are 0.998 and 0.920 g cm^-3 respectively and the enthalpy of fusion of water is +6.01 kJ mol^-1.

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Question 1

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What is the osmotic pressure generated at 25°C by a solution of 1.26 g of sucrose, C₁₂H₂₂O₁₁, in 250 cm³ of water?

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Question 2

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Determine the vapour pressure of diethyl ether, C₄H₁₀O, at a temperature of 298 K, given that the normal boiling temperature is 308 K and enthalpy of vaporization is 25.9 kJ mol^-1.

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Question 3

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The vapour pressure of pure benzene is 0.146 bar and of pure toluene is 0.185 bar at 298 K. Determine the mole fraction of toluene in an ideal liquid mixture of benzene and toluene for which the total vapour pressure is 0.160 bar at this temperature.

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Question 4

The vapour pressure of methanol, CH₄O, is 27.5 kPa at 308 K. Determine the normal boiling temperature of ethanol if the enthalpy of vaporization is 37.6 kJ mol^-1.

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Question 5

Trichloromethane, CHCl₃, and propanone, C₃H₆O, form liquid-vapour mixtures with a maximum-boiling azeotrope. What does this imply about the nature of the interactions between the molecules in the mixture?

(Multiple Choice)

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Question 6

The vapour pressure of pure aniline is 1314 Pa at 350 K and 13372 Pa at 400 K. Determine the enthalpy of vaporization of aniline.

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Question 7

Estimate the increase in the vapour pressure of octane, C₈H₁₈, from when the temperature is 298 K to when the temperature is 308 K. The normal boiling temperature is 329 K and enthalpy of vaporization is 31.3 kJ mol^-1.

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Question 8

Determine the mass of sodium chloride, NaCl, that must be added to water to create an aqueous solution of volume 0.50 dm³ with an osmotic pressure of 1.0 atm at 298 K.

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Question 9

0.10 g of a protein is added to 250 cm³water at 298 K and the osmotic pressure is measured as 255 Pa. Estimate the relative molecular mass of the protein.

(Multiple Choice)

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Question 10

Determine the vapour pressure of n-hexane, C₆H₁₄, at a temperature of 298 K, given that the normal boiling temperature is 342 K and enthalpy of vaporization is 30.9 kJ mol^-1.

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Question 11

The vapour pressure of pure 1-propanol is 2792 Pa at 25°C and 11995 Pa at 50°C. Determine the enthalpy of vaporization of 1-propanol.

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Question 12

The vapour pressure of pyridine, C₅H₅N, is 2.25 kPa at 25°C. Determine the normal boiling temperature of pyridine if the enthalpy of vaporization is 40.3 kJ mol^-1.

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Question 13

The Henry's law constant for carbon dioxide dissolved in water at 298 K is 0.163  10⁹ Pa. Determine the mole fraction of carbon dioxide in water in equilibrium with air at a pressure of 1 atm and temperature of 298 K, assuming the proportion of carbon dioxide in dry air is 0.04%.

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Question 14

0.25 g of a protein is added to 250 cm³water at 298 K and the osmotic pressure is measured as 320 Pa. Estimate the relative molecular mass of the protein.

(Multiple Choice)

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Question 15

What is the osmotic pressure generated at 25°C by a solution of 2.50 g of glucose, C₆H₁₂O₆, in 500 cm³ of water at 298 K?

(Multiple Choice)

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Question 16

The Henry's law constant for nitrogen dissolved in water at 298 K is 8.68  10⁹ Pa. Determine the mole fraction of nitrogen in water in equilibrium with air at a pressure of 1 atm and temperature of 298 K.

(Multiple Choice)

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Question 17

Determine the vapour pressure of acetone, C₃H₆O, at a temperature of 298 K, given that the normal boiling temperature is 329 K and enthalpy of vaporization is 31.3 kJ mol^-1.

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Question 18

Estimate the change in the vapour pressure of -pinene, C₁₀H₁₆, from when the temperature is 323 K to when the temperature is 273 K. The normal boiling temperature is 430 K and enthalpy of vaporization is 45.4 kJ mol^-1.

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Question 19

Determine the mass of potassium chloride, KCl, that must be added to water to create an aqueous solution of volume 25 dm³ with an osmotic pressure of 1.0 bar.

(Multiple Choice)

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Question 20

Showing 1 - 20 of 25

Exam 17: Phase Equilibrium and Solutions

An ice skater exerts a pressure of 3.1 MPa. Calculate the change in the melting point of the ice under the skate, given that the densities of liquid water and ice are 0.998 and 0.920 g cm-3 respectively and the enthalpy of fusion of water is +6.01 kJ mol-1.

What is the osmotic pressure generated at 25°C by a solution of 1.26 g of sucrose, C12H22O11, in 250 cm3 of water?

Determine the vapour pressure of diethyl ether, C4H10O, at a temperature of 298 K, given that the normal boiling temperature is 308 K and enthalpy of vaporization is 25.9 kJ mol-1.

The vapour pressure of pure benzene is 0.146 bar and of pure toluene is 0.185 bar at 298 K. Determine the mole fraction of toluene in an ideal liquid mixture of benzene and toluene for which the total vapour pressure is 0.160 bar at this temperature.

The vapour pressure of methanol, CH4O, is 27.5 kPa at 308 K. Determine the normal boiling temperature of ethanol if the enthalpy of vaporization is 37.6 kJ mol-1.

Trichloromethane, CHCl3, and propanone, C3H6O, form liquid-vapour mixtures with a maximum-boiling azeotrope. What does this imply about the nature of the interactions between the molecules in the mixture?

The vapour pressure of pure aniline is 1314 Pa at 350 K and 13372 Pa at 400 K. Determine the enthalpy of vaporization of aniline.

Estimate the increase in the vapour pressure of octane, C8H18, from when the temperature is 298 K to when the temperature is 308 K. The normal boiling temperature is 329 K and enthalpy of vaporization is 31.3 kJ mol-1.

Determine the mass of sodium chloride, NaCl, that must be added to water to create an aqueous solution of volume 0.50 dm3 with an osmotic pressure of 1.0 atm at 298 K.

0.10 g of a protein is added to 250 cm3 water at 298 K and the osmotic pressure is measured as 255 Pa. Estimate the relative molecular mass of the protein.

Determine the vapour pressure of n-hexane, C6H14, at a temperature of 298 K, given that the normal boiling temperature is 342 K and enthalpy of vaporization is 30.9 kJ mol-1.

The vapour pressure of pure 1-propanol is 2792 Pa at 25°C and 11995 Pa at 50°C. Determine the enthalpy of vaporization of 1-propanol.

The vapour pressure of pyridine, C5H5N, is 2.25 kPa at 25°C. Determine the normal boiling temperature of pyridine if the enthalpy of vaporization is 40.3 kJ mol-1.

The Henry's law constant for carbon dioxide dissolved in water at 298 K is 0.163  109 Pa. Determine the mole fraction of carbon dioxide in water in equilibrium with air at a pressure of 1 atm and temperature of 298 K, assuming the proportion of carbon dioxide in dry air is 0.04%.

0.25 g of a protein is added to 250 cm3 water at 298 K and the osmotic pressure is measured as 320 Pa. Estimate the relative molecular mass of the protein.

What is the osmotic pressure generated at 25°C by a solution of 2.50 g of glucose, C6H12O6, in 500 cm3 of water at 298 K?

The Henry's law constant for nitrogen dissolved in water at 298 K is 8.68  109 Pa. Determine the mole fraction of nitrogen in water in equilibrium with air at a pressure of 1 atm and temperature of 298 K.

Determine the vapour pressure of acetone, C3H6O, at a temperature of 298 K, given that the normal boiling temperature is 329 K and enthalpy of vaporization is 31.3 kJ mol-1.

Estimate the change in the vapour pressure of -pinene, C10H16, from when the temperature is 323 K to when the temperature is 273 K. The normal boiling temperature is 430 K and enthalpy of vaporization is 45.4 kJ mol-1.

Determine the mass of potassium chloride, KCl, that must be added to water to create an aqueous solution of volume 25 dm3 with an osmotic pressure of 1.0 bar.

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An ice skater exerts a pressure of 3.1 MPa. Calculate the change in the melting point of the ice under the skate, given that the densities of liquid water and ice are 0.998 and 0.920 g cm^-3 respectively and the enthalpy of fusion of water is +6.01 kJ mol^-1.

What is the osmotic pressure generated at 25°C by a solution of 1.26 g of sucrose, C₁₂H₂₂O₁₁, in 250 cm³ of water?

Determine the vapour pressure of diethyl ether, C₄H₁₀O, at a temperature of 298 K, given that the normal boiling temperature is 308 K and enthalpy of vaporization is 25.9 kJ mol^-1.

The vapour pressure of methanol, CH₄O, is 27.5 kPa at 308 K. Determine the normal boiling temperature of ethanol if the enthalpy of vaporization is 37.6 kJ mol^-1.

Trichloromethane, CHCl₃, and propanone, C₃H₆O, form liquid-vapour mixtures with a maximum-boiling azeotrope. What does this imply about the nature of the interactions between the molecules in the mixture?

Estimate the increase in the vapour pressure of octane, C₈H₁₈, from when the temperature is 298 K to when the temperature is 308 K. The normal boiling temperature is 329 K and enthalpy of vaporization is 31.3 kJ mol^-1.

Determine the mass of sodium chloride, NaCl, that must be added to water to create an aqueous solution of volume 0.50 dm³ with an osmotic pressure of 1.0 atm at 298 K.

0.10 g of a protein is added to 250 cm³water at 298 K and the osmotic pressure is measured as 255 Pa. Estimate the relative molecular mass of the protein.

Determine the vapour pressure of n-hexane, C₆H₁₄, at a temperature of 298 K, given that the normal boiling temperature is 342 K and enthalpy of vaporization is 30.9 kJ mol^-1.

The vapour pressure of pyridine, C₅H₅N, is 2.25 kPa at 25°C. Determine the normal boiling temperature of pyridine if the enthalpy of vaporization is 40.3 kJ mol^-1.

The Henry's law constant for carbon dioxide dissolved in water at 298 K is 0.163  10⁹ Pa. Determine the mole fraction of carbon dioxide in water in equilibrium with air at a pressure of 1 atm and temperature of 298 K, assuming the proportion of carbon dioxide in dry air is 0.04%.

0.25 g of a protein is added to 250 cm³water at 298 K and the osmotic pressure is measured as 320 Pa. Estimate the relative molecular mass of the protein.

What is the osmotic pressure generated at 25°C by a solution of 2.50 g of glucose, C₆H₁₂O₆, in 500 cm³ of water at 298 K?

The Henry's law constant for nitrogen dissolved in water at 298 K is 8.68  10⁹ Pa. Determine the mole fraction of nitrogen in water in equilibrium with air at a pressure of 1 atm and temperature of 298 K.

Determine the vapour pressure of acetone, C₃H₆O, at a temperature of 298 K, given that the normal boiling temperature is 329 K and enthalpy of vaporization is 31.3 kJ mol^-1.

Estimate the change in the vapour pressure of -pinene, C₁₀H₁₆, from when the temperature is 323 K to when the temperature is 273 K. The normal boiling temperature is 430 K and enthalpy of vaporization is 45.4 kJ mol^-1.

Determine the mass of potassium chloride, KCl, that must be added to water to create an aqueous solution of volume 25 dm³ with an osmotic pressure of 1.0 bar.