Activity 1.1. 1. How does rise in temperature affect solubility of solids, liquids and gases? 2. How do colligative properties of solutions vary according to concentration? Activity 1.2. 1. Calculate the vapor pressure of a solution made by dissolving 82.4 g of urea (molar mass = 60.06 g/mol) in 212 mL of water at 35 "C. What is the vapor-pressure lowering?

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Activitv 1.1.
1. How does rise in temperature affect solubility of solids, liquids
and gases?
2. How do colligative properties of solutions vary according to
concentration?
Activity 1.2.
1. Calculate the vapor pressure of a solution made by dissolving
82.4 g of urea (molar mass = 60.06 g/mol) in 212 mL of water at
35 °C. What is the vapor-pressure lowering?
2. A solution of 0.85 gof an organic compound in 100.0 g of benzene
has a freezing point of 5.16 °C. What are the molality of the
solution and the molar mass of the solute?
Assessment
Choose the letter of the correct answer. Write your answer on your
answer sheet.
1. Which factor would NOT affect the solubility of sugar in water?
A. add salt to the water
B. stir the water and sugar
13
C. heat the water and sugar
D. grind the sugar to make it finer
2. Which is NOT a property of solution?
A. it consists of a single phase
B. it is a homogeneous mixture
C. it has a definite composition
D. components readily separate if left undisturbed for 24 hours
3. Which is TRUE about colligative properties of solution?
A. they have different origin
B. they depend on the nature of solutes
C. solutes may be atoms, molecules, or ions
D. they depend on the number of solvent particles
4. Which term refers to the temperature at which a solution's vapor pressure
equals the external atmospheric pressure?
A. melting point
B. boiling point
5. A solution is prepared by dissolving 35.0 g of hemoglobin (Hb) in enough water
to make up 1 L in volume. If the osmotic pressure of the solution is found to
be 10.0 mmHg at 25 °C, what is the molar mass of hemoglobin?
A. 5.38 X 104
B. 8.21 X 10
C. freezing point
D. sublimation point
C. 3.50 X 10
D. 6.51 X 10
Transcribed Image Text:Activitv 1.1. 1. How does rise in temperature affect solubility of solids, liquids and gases? 2. How do colligative properties of solutions vary according to concentration? Activity 1.2. 1. Calculate the vapor pressure of a solution made by dissolving 82.4 g of urea (molar mass = 60.06 g/mol) in 212 mL of water at 35 °C. What is the vapor-pressure lowering? 2. A solution of 0.85 gof an organic compound in 100.0 g of benzene has a freezing point of 5.16 °C. What are the molality of the solution and the molar mass of the solute? Assessment Choose the letter of the correct answer. Write your answer on your answer sheet. 1. Which factor would NOT affect the solubility of sugar in water? A. add salt to the water B. stir the water and sugar 13 C. heat the water and sugar D. grind the sugar to make it finer 2. Which is NOT a property of solution? A. it consists of a single phase B. it is a homogeneous mixture C. it has a definite composition D. components readily separate if left undisturbed for 24 hours 3. Which is TRUE about colligative properties of solution? A. they have different origin B. they depend on the nature of solutes C. solutes may be atoms, molecules, or ions D. they depend on the number of solvent particles 4. Which term refers to the temperature at which a solution's vapor pressure equals the external atmospheric pressure? A. melting point B. boiling point 5. A solution is prepared by dissolving 35.0 g of hemoglobin (Hb) in enough water to make up 1 L in volume. If the osmotic pressure of the solution is found to be 10.0 mmHg at 25 °C, what is the molar mass of hemoglobin? A. 5.38 X 104 B. 8.21 X 10 C. freezing point D. sublimation point C. 3.50 X 10 D. 6.51 X 10
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