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1. The normal boiling point for acetone is 56.5°C. At an elevation of 5300 feet, the atmospheric pressure is 630. torr. a. What would be the boiling point of acetone (AHvap = 32.0 kJ/mol) at this elevation? b. What would be the vapor pressure of acetone at 28.0°C at this elevation?

1. The normal boiling point for acetone is 56.5°C. At an elevation of 5300 feet, the atmospheric pressure is 630. torr. a. What would be the boiling point of acetone (AHvap = 32.0 kJ/mol) at this elevation? b. What would be the vapor pressure of acetone at 28.0°C at this elevation?

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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
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1. The normal boiling point for acetone is 56.5°C. At an elevation of 5300 feet, the atmospheric pressure is 630. torr. a. What would be the boiling point of acetone (AHºvap = 32.0 kJ/mol) at this elevation? b. What would be the vapor pressure of acetone at 28.0°C at this elevation? IM $145 5/X 2.75.15 28: 301.2K1 31 2. Multiple choice...Choose the best answer At a given temperature, the vapor pressure of SiF4 is significantly higher than that of SF4. The major physical basis for the difference in vapor pressure is that SiF4 and SF4 have different (a) dipole moments (b) molar masses (c) ionization energies (d) magnetic susceptibilites
Transcribed Image Text:1. The normal boiling point for acetone is 56.5°C. At an elevation of 5300 feet, the atmospheric pressure is 630. torr. a. What would be the boiling point of acetone (AHºvap = 32.0 kJ/mol) at this elevation? b. What would be the vapor pressure of acetone at 28.0°C at this elevation? IM $145 5/X 2.75.15 28: 301.2K1 31 2. Multiple choice...Choose the best answer At a given temperature, the vapor pressure of SiF4 is significantly higher than that of SF4. The major physical basis for the difference in vapor pressure is that SiF4 and SF4 have different (a) dipole moments (b) molar masses (c) ionization energies (d) magnetic susceptibilites
started 3. Multiple choice...Choose the best answer The vapor pressure of a liquid increases with an increase in temperature. Which one of the following statements best explains this increase? a. The average kinetic energy of molecules is greater, thus more molecules can enter the gaseous state. b. The number of gaseous molecules above the liquid remains constant, but these molecules have greater average kinetic energy. c. The faster-moving molecules in the liquid exert a greater pressure. d. All the molecules have greater kinetic energies. e. The intermolecular forces between the molecules decrease at higher temperatures. 4. The heats of vaporization for water and carbon disulfide are 40.7 kJ/mol and 26.8 kJ/mol, respectively. a. Why is the heat of vaporization of water greater than that of carbon disulfide? 101.3 2
Transcribed Image Text:started 3. Multiple choice...Choose the best answer The vapor pressure of a liquid increases with an increase in temperature. Which one of the following statements best explains this increase? a. The average kinetic energy of molecules is greater, thus more molecules can enter the gaseous state. b. The number of gaseous molecules above the liquid remains constant, but these molecules have greater average kinetic energy. c. The faster-moving molecules in the liquid exert a greater pressure. d. All the molecules have greater kinetic energies. e. The intermolecular forces between the molecules decrease at higher temperatures. 4. The heats of vaporization for water and carbon disulfide are 40.7 kJ/mol and 26.8 kJ/mol, respectively. a. Why is the heat of vaporization of water greater than that of carbon disulfide? 101.3 2
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