Answer number 2 with complete solution. 1. Solid benzene melts at 28.35 °C when the pressure is 85.2 MPa. The molar volumes of solid and liquidbenzene at these conditions are 74.25 cm³ mol-l and 82.55 cm³ mol-', respectively.High Temperature Materials and Processes 26 (2007) 365-369а.When the pressure is increased to 128 MPa, benzene is found to melt at 39.85 °C. Calculate theenthalpy and entropy of fusion of the solid.b.Estimate the freezing temperature of benzene at 92.5 MPa.The normal boiling point of ethanol, C2H5OH, is 78.3 °C and its molar heat of vaporization is 39.3 kJ mol-'.What is the vapor pressure, in mmHg, of ethanol at 52.1 °C?2.а.b.What is the entropy of vaporization at standard boiling point?

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What is the vapor pressure, in mmHg, of ethanol at 52.1 °C? What is the entropy of vaporization at standard boiling point?

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

Chapter17: Spontaneity, Entropy, And Free Energy

Section: Chapter Questions

Problem 128IP: Some nonelectrolyte solute (molar mass = 142 g/mol) was dissolved in 150. mL of a solvent (density =...

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Question

Answer number 2 with complete solution.

1. Solid benzene melts at 28.35 °C when the pressure is 85.2 MPa. The molar volumes of solid and liquid
benzene at these conditions are 74.25 cm³ mol-l and 82.55 cm³ mol-', respectively.
High Temperature Materials and Processes 26 (2007) 365-369
а.
When the pressure is increased to 128 MPa, benzene is found to melt at 39.85 °C. Calculate the
enthalpy and entropy of fusion of the solid.
b.
Estimate the freezing temperature of benzene at 92.5 MPa.
The normal boiling point of ethanol, C2H5OH, is 78.3 °C and its molar heat of vaporization is 39.3 kJ mol-'.
What is the vapor pressure, in mmHg, of ethanol at 52.1 °C?
2.
а.
b.
What is the entropy of vaporization at standard boiling point?

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