The vapor pressure of ammonia at –50°C is 0.4034 atm;at 0°C, it is 4.2380 atm.(a) Calculate the molar enthalpy of vaporization (AHvap)of ammonia.(b) Calculate the normal boiling temperature of NH3(€).

The molar enthalpy of vaporization can be calculated from the below formula:

Answered: The vapor pressure of ammonia at –50°C…

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter14: Chemical Equilibrium

Section: Chapter Questions

Problem 67P

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The vapor pressure of ammonia at –50°C is 0.4034 atm; at 0°C, it is 4.2380 atm. (a) Calculate the molar enthalpy of vaporization (AHvap) of ammonia. (b) Calculate the normal boiling temperature of NH3(€).