Answered: The vapor pressure of a substance is…

Chemistry & Chemical Reactivity

9th Edition

ISBN:9781133949640

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter11: Intermolecular Forces And Liquids

Section: Chapter Questions

Problem 64SCQ: Vapor pressures of NH3() at several temperatures are given in the table below. Use this information...

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Question

The vapor pressure of a substance is measured over a range of
temperatures. A plot of the natural log of the vapor pressure versus
the inverse of the temperature (in Kelvin) produces a straight
line with a slope of -3.46 * 103
K. What is the enthalpy of
vaporization of the substance?
a) 2.40 * 10-3
kJ>mol
b) 28.8 kJ>mol
c) 0.416 kJ>mol
d) 3.22 kJ>mol

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