The molar heat of fusion of lithium metal is 3.00 kJ/mol, whereas its heat of vaporization is 147 kJ/mol. a. Why is the heat of vaporization so much larger than the heat of fusion? O Since conversion from a liquid to a gas breaks many more intermolecular forces than conversion from a solid to a liquid, it requires much more energy. O Since conversion from a solid to a liquid breaks many more intermolecular forces than conversion from a liquid to a gas, it requires much less energy. O Since conversion from a solid to a liquid breaks many more intermolecular forces than conversion from a liquid to a gas, it requires much more energy. O Since conversion from a liquid to a gas breaks many more intermolecular forces than conversion from a solid to a liquid, it requires much less energy. b. What quantity of heat would be needed to melt 1.00 g lithium at its normal melting point? Нeat - J What quantity of heat would be needed to vaporize 1.00 g lithium at its normal boiling point? Heat = What quantity of heat would be evolved if 1.00 g lithium vapor condensed at its normal boiling point? Heat =
The molar heat of fusion of lithium metal is 3.00 kJ/mol, whereas its heat of vaporization is 147 kJ/mol. a. Why is the heat of vaporization so much larger than the heat of fusion? O Since conversion from a liquid to a gas breaks many more intermolecular forces than conversion from a solid to a liquid, it requires much more energy. O Since conversion from a solid to a liquid breaks many more intermolecular forces than conversion from a liquid to a gas, it requires much less energy. O Since conversion from a solid to a liquid breaks many more intermolecular forces than conversion from a liquid to a gas, it requires much more energy. O Since conversion from a liquid to a gas breaks many more intermolecular forces than conversion from a solid to a liquid, it requires much less energy. b. What quantity of heat would be needed to melt 1.00 g lithium at its normal melting point? Нeat - J What quantity of heat would be needed to vaporize 1.00 g lithium at its normal boiling point? Heat = What quantity of heat would be evolved if 1.00 g lithium vapor condensed at its normal boiling point? Heat =
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
Chapter10: Liquids And Solids
Section: Chapter Questions
Problem 99E: The molar heat of fusion of sodium metal is 2.60 kJ/mol, whereas its heat of vaporization is 97.0...
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Transcribed Image Text:The molar heat of fusion of lithium metal is 3.00 kJ/mol, whereas its heat of vaporization is 147 kJ/mol.
a. Why is the heat of vaporization so much larger than the heat of fusion?
Since conversion from a liquid to a gas breaks many more intermolecular forces than conversion from a solid to a liquid, it requires much more energy.
Since conversion from a solid to a liquid breaks many more intermolecular forces than conversion from a liquid to a gas, it requires much less energy.
Since conversion from a solid to a liquid breaks many more intermolecular forces than conversion from a liquid to a gas, it requires much more energy.
O Since conversion from a liquid to a gas breaks many more intermolecular forces than conversion from a solid to a liquid, it requires much less energy.
b. What quantity of heat would be needed to melt 1.00 g lithium at its normal melting point?
Нeat 3D
J
What quantity of heat would be needed to vaporize 1.00 g lithium at its normal boiling point?
Heat =
What quantity of heat would be evolved if 1.00 g lithium vapor condensed at its normal boiling point?
Нeat 3D
J
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