22. An ideal solution contains 92. 1 g of glycerin, C,H,(OH),, and 184.4 g of ethanol, C,H,OH, at 40 °C. The vapor pressure of pure ethanol is 0.178 atm at 40 °C. What is the molality of the solution? What is the vapor pressure of a solution? 5.43 m, 57.86 torr D. 5.43 m, 23.4 torr B. 21.7 m, 90.34 torr C. 21.7 m, 12.56 torr
22. An ideal solution contains 92. 1 g of glycerin, C,H,(OH),, and 184.4 g of ethanol, C,H,OH, at 40 °C. The vapor pressure of pure ethanol is 0.178 atm at 40 °C. What is the molality of the solution? What is the vapor pressure of a solution? 5.43 m, 57.86 torr D. 5.43 m, 23.4 torr B. 21.7 m, 90.34 torr C. 21.7 m, 12.56 torr
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter13: Solutions And Their Behavior
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Problem 71GQ: An aqueous solution containing 10.0 g of starch per liter has an osmotic pressure of 3.8 mm Hg at 25...
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![22. An ideal solution contains 92. 1g of glycerin, C,H,(OH),, and 184.4 g of ethanol, C,H,OH, at 40
°C. The vapor pressure of pure ethanol is 0.178 atm at 40 °C. What is the molality of the solution?
What is the vapor pressure of a solution?
5.43 m, 57.86 torr
D. 5.43 m, 23.4 torr
B. 21.7 m, 90.34 torr
C. 21.7 m, 12.56 torr
23. Salt could be added to ice to lower the melting temperature of the ice so it easily freezes the ice
cream mixture. If 3.5 m of salt was added to ice, determine its new freezing point.
A. 6.0 °C
D. -6.5 °C
C. 6.5 °C
B. -6.0 °C
24. Two moles of aluminum was heated from 45 °C to 93 °C. Calculate the amount of heat absorbed
by aluminum. Specific heat of Al= 0.90 J/g-K
A. 1333 J
4333 J
B. 2333 J
C. 3333 J
D.
25. Calculate the standard enthalpy change, AH, for the following reaction:
2CH,OH, + 30 2 CO+4H,O
Given:
AHP = -238.7 kJ/mol
AH = -393.5 kJ/mol
AH = -285.8 kJ/mol
CH,OH
H,O
A. -918 kJ/mol
B. +918 kJ/mol
C. -1452.8 kJ/mol
D. +1452.8 kJ/mol](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F59a27d0f-6f9d-44d5-96aa-4e0c7bbceaa1%2F889b53eb-fa72-4270-91bc-6917349e949b%2Fa6yg6db_processed.jpeg&w=3840&q=75)
Transcribed Image Text:22. An ideal solution contains 92. 1g of glycerin, C,H,(OH),, and 184.4 g of ethanol, C,H,OH, at 40
°C. The vapor pressure of pure ethanol is 0.178 atm at 40 °C. What is the molality of the solution?
What is the vapor pressure of a solution?
5.43 m, 57.86 torr
D. 5.43 m, 23.4 torr
B. 21.7 m, 90.34 torr
C. 21.7 m, 12.56 torr
23. Salt could be added to ice to lower the melting temperature of the ice so it easily freezes the ice
cream mixture. If 3.5 m of salt was added to ice, determine its new freezing point.
A. 6.0 °C
D. -6.5 °C
C. 6.5 °C
B. -6.0 °C
24. Two moles of aluminum was heated from 45 °C to 93 °C. Calculate the amount of heat absorbed
by aluminum. Specific heat of Al= 0.90 J/g-K
A. 1333 J
4333 J
B. 2333 J
C. 3333 J
D.
25. Calculate the standard enthalpy change, AH, for the following reaction:
2CH,OH, + 30 2 CO+4H,O
Given:
AHP = -238.7 kJ/mol
AH = -393.5 kJ/mol
AH = -285.8 kJ/mol
CH,OH
H,O
A. -918 kJ/mol
B. +918 kJ/mol
C. -1452.8 kJ/mol
D. +1452.8 kJ/mol
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