The vapour pressure of a pure substance at various temperatures is presented below. T (°C) Pvap (mmHg) 0.0 10.5 15.0 18.6 25.0 26.4 40.0 42.8 60.0 76.2 80.0 127.0 a) Calculate H°vap for this substance. b)What is the substance's normal boiling point?
The vapour pressure of a pure substance at various temperatures is presented below. T (°C) Pvap (mmHg) 0.0 10.5 15.0 18.6 25.0 26.4 40.0 42.8 60.0 76.2 80.0 127.0 a) Calculate H°vap for this substance. b)What is the substance's normal boiling point?
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 68P
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The vapour pressure of a pure substance at various temperatures is presented below.
T (°C) | Pvap (mmHg) |
0.0 | 10.5 |
15.0 | 18.6 |
25.0 | 26.4 |
40.0 | 42.8 |
60.0 | 76.2 |
80.0 | 127.0 |
a) Calculate H°vap for this substance.
b)What is the substance's normal boiling point?
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