The compound C2Cl3F3 has a normal boiling point of 47.6 oC. The specific heat of this compound is 0.91 J/gC for the liquid state and the heat of vaporization is 27.49 kJ/mol. A 20.0 g sample of C2Cl3F3 at 42.3 oC is completely vaporized. During this process what is the energy being used to do? Would you expect the value for the heat of fusion to be larger or smaller than 27.49 kJ/mol? Explain. How much heat is involved in condensing a 20.0 g sample of C2Cl3F3? Is this an endothermic or exothermic process?
The compound C2Cl3F3 has a normal boiling point of 47.6 oC. The specific heat of this compound is 0.91 J/gC for the liquid state and the heat of vaporization is 27.49 kJ/mol. A 20.0 g sample of C2Cl3F3 at 42.3 oC is completely vaporized. During this process what is the energy being used to do? Would you expect the value for the heat of fusion to be larger or smaller than 27.49 kJ/mol? Explain. How much heat is involved in condensing a 20.0 g sample of C2Cl3F3? Is this an endothermic or exothermic process?
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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The compound C2Cl3F3 has a normal boiling point of 47.6 oC. The specific heat of this compound is 0.91 J/gC for the liquid state and the heat of vaporization is 27.49 kJ/mol. A 20.0 g sample of C2Cl3F3 at 42.3 oC is completely vaporized.
- During this process what is the energy being used to do?
- Would you expect the value for the heat of fusion to be larger or smaller than 27.49 kJ/mol? Explain.
- How much heat is involved in condensing a 20.0 g sample of C2Cl3F3? Is this an endothermic or exothermic process?
Expert Solution
Introduction
When a liquid starts boiling at its boiling point, the temperature of the liquid remains constant until all of the liquid evaporates and the same goes for the process of melting of the solid. During this process, all of the heat provided to the system goes towards the phase change that is happening and not towards the temperature change.
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