(a)
Interpretation: The vapor pressure of benzene (l) at 340.0 K needs to be determined, if the vapor pressure of benzene is 0.1269 bar at 298.15 K and the enthalpy of vaporization is 30.72 kJ/mol. Also, it is assumed that the enthalpy of vaporization does not change with temperature.
The value of
Concept Introduction: All substances can mainly exist in three phases; solid, liquid and gases. These three phases can convert into each other by the application of temperature and pressure such as by heating of solid, it converts to liquid and then gaseous
Similarly, the gases can be compressed at high pressure to liquefy. The enthalpy change during the fusion of solid to liquid is called as enthalpy of fusion that is denoted as
(b)
Interpretation: The vapor pressure of benzene needs to be determined at 340.0 K, if the vapor pressure of benzene is 0.1269 bar at 298.15 K and the enthalpy of vaporization is 30.72 kJ/mol. Also, it is assumed that the enthalpy of vaporization at T is calculated from below equation:
The value of
Concept Introduction: All substances can mainly exist in three phases; solid, liquid and gases. These three phases can convert into each other by the application of temperature and pressure such as by heating of solid, it converts to liquid and then gaseous state of matter.
Similarly, the gases can be compressed at high pressure to liquefy. The enthalpy change during the fusion of solid to liquid is called as enthalpy of fusion that is denoted as
Want to see the full answer?
Check out a sample textbook solutionChapter 8 Solutions
Physical Chemistry
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY