On a cold, dry morning after a frost, the temperature was −5 °C and the partial pressure of water in the atmosphere fell to 0.30 kPa. Will the frost sublime? The enthalpy of sublimation of water is 51 kJ mol−1 . (Hint: Use eq’n 4B.10 to calculate the vapor pressure expected for ice at this temperature; for p* and T* use the values for the triple point of 611 Pa and 273.16 K.)
On a cold, dry morning after a frost, the temperature was −5 °C and the partial pressure of water in the atmosphere fell to 0.30 kPa. Will the frost sublime? The enthalpy of sublimation of water is 51 kJ mol−1 . (Hint: Use eq’n 4B.10 to calculate the vapor pressure expected for ice at this temperature; for p* and T* use the values for the triple point of 611 Pa and 273.16 K.)
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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On a cold, dry morning after a frost, the temperature was −5 °C and the partial pressure of water in the atmosphere fell to 0.30 kPa. Will the frost sublime? The enthalpy of sublimation of water is 51 kJ mol−1 . (Hint: Use eq’n 4B.10 to calculate the vapor pressure expected for ice at this temperature; for p* and T* use the values for the triple point of 611 Pa and 273.16 K.)
Transcribed Image Text:AvapH (1
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p=p*e* x=- R T T*
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