C. 22.97 torr D. 78.12 tor 72. A 0.25g of a certain substance is dissolved in 60g of water. The freezing point of the solution is- 0.050 °C. Knowing that the substance has a van't Hoff factor of1 and is non-volatile, what is the molar mass of the substance? (Freezing point depression of water =- 1.86 °C/m) A. 0.00016 g/mol B. 156.25 g/mol C. 186.54 g/mol D. 1.86 g/mol 73. What is the osmotic pressure (at 20 °C) of a solution made by dissolving 13g of sucrose in 117g of water? The total volume of the solution is 125mL at 20 °C. A. 7.31 atm B. 0.30 atm C. 342 atm D. 0.08 atm 74. A solution contains 3.86g of magnesium chloride and 250g of water. Compute for the freezing point depression of the solution. (Kr water: 1.86 °C/m) A. 0.16 °C B. 0.25 °C C. -0.25 °C D. -0.90 °C 75. Assume that a 1-L solution contains 35g of potassium chloride (MM: 74.6 g/mol). Compute for the osmotic pressure if the solution is at 298 K...(R 0.08206 L-atm/ mol-K) A. 22.95 atm 24.50 atm C. 11.47 atm -11.47 atm ABCD
C. 22.97 torr D. 78.12 tor 72. A 0.25g of a certain substance is dissolved in 60g of water. The freezing point of the solution is- 0.050 °C. Knowing that the substance has a van't Hoff factor of1 and is non-volatile, what is the molar mass of the substance? (Freezing point depression of water =- 1.86 °C/m) A. 0.00016 g/mol B. 156.25 g/mol C. 186.54 g/mol D. 1.86 g/mol 73. What is the osmotic pressure (at 20 °C) of a solution made by dissolving 13g of sucrose in 117g of water? The total volume of the solution is 125mL at 20 °C. A. 7.31 atm B. 0.30 atm C. 342 atm D. 0.08 atm 74. A solution contains 3.86g of magnesium chloride and 250g of water. Compute for the freezing point depression of the solution. (Kr water: 1.86 °C/m) A. 0.16 °C B. 0.25 °C C. -0.25 °C D. -0.90 °C 75. Assume that a 1-L solution contains 35g of potassium chloride (MM: 74.6 g/mol). Compute for the osmotic pressure if the solution is at 298 K...(R 0.08206 L-atm/ mol-K) A. 22.95 atm 24.50 atm C. 11.47 atm -11.47 atm ABCD
Chemistry
10th Edition
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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Question
![C. 22.97 torr
D. 78.12 tor
72. A 0.25g of a certain substance is dissolved in 60g of water. The freezing point of the solution is- 0.050 °C. Knowing
that the substance has a van't Hoff factor of1 and is non-volatile, what is the molar mass of the substance? (Freezing
point depression of water =- 1.86 °C/m)
A. 0.00016 g/mol
B. 156.25 g/mol
C. 186.54 g/mol
D. 1.86 g/mol
73. What is the osmotic pressure (at 20 °C) of a solution made by dissolving 13g of sucrose in 117g of water? The total
volume of the solution is 125mL at 20 °C.
A. 7.31 atm
B. 0.30 atm
С. 342 atm
D. 0.08 atm
74. A solution contains 3.86g of magnesium chloride and 250g of water. Compute for the freezing point depression of the
solution. (Kr water: 1.86 °C/m)
A. 0.16 °C
B. 0.25 °C
C. -0.25 °C
D. -0.90 °C
75. Assume that a 1-L solution contains 35g of potassium chloride (MM: 74.6 g/mol). Compute for the osmotic pressure if
the solution is at 298 K. (R 0.08206 L-atm/ mol-K)
A. 22.95 atm
B.
24.50 atm
C2
11.47 atm
D.
-11.47 atm](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff4caf361-8d3d-4506-9965-253935172ba3%2Fcf5e52f2-30d3-4979-a058-6c33ab52ef81%2Fzmoju8f_processed.jpeg&w=3840&q=75)
Transcribed Image Text:C. 22.97 torr
D. 78.12 tor
72. A 0.25g of a certain substance is dissolved in 60g of water. The freezing point of the solution is- 0.050 °C. Knowing
that the substance has a van't Hoff factor of1 and is non-volatile, what is the molar mass of the substance? (Freezing
point depression of water =- 1.86 °C/m)
A. 0.00016 g/mol
B. 156.25 g/mol
C. 186.54 g/mol
D. 1.86 g/mol
73. What is the osmotic pressure (at 20 °C) of a solution made by dissolving 13g of sucrose in 117g of water? The total
volume of the solution is 125mL at 20 °C.
A. 7.31 atm
B. 0.30 atm
С. 342 atm
D. 0.08 atm
74. A solution contains 3.86g of magnesium chloride and 250g of water. Compute for the freezing point depression of the
solution. (Kr water: 1.86 °C/m)
A. 0.16 °C
B. 0.25 °C
C. -0.25 °C
D. -0.90 °C
75. Assume that a 1-L solution contains 35g of potassium chloride (MM: 74.6 g/mol). Compute for the osmotic pressure if
the solution is at 298 K. (R 0.08206 L-atm/ mol-K)
A. 22.95 atm
B.
24.50 atm
C2
11.47 atm
D.
-11.47 atm
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