The vapour pressure of a substance describes how readily molecules at the surface of the substance enter the gaseous phase. At the boiling point of a liquid, the liquid's vapour pressure is equal to or greater than the atmospheric pressure exerted on the surface of the liquid. Since the atmospheric pressure at higher elevations is lower than at sea level, the boiling point of water decreases as the elevation increases. The atmospheric pressure at sea level is 760 mmHg. This pressure decreases by 6.50 mmHg for every 100 m increase in elevation. Part A What is the boiling point of water at an elevation of 6000 m ? Express your answer with the appropriate units using three significant figures. Elevation Pressure > View Available Hint(s) 0m 760 mmHg 695 mmHg Peset Tempjetes Symbols uhdo redo 1000 m keyboard shortcuts Help 2000 m 630 mmHg T = 94.3 The boiling point of water decreases 0.05 °C for every 1 mmHg drop in atmospheric pressure

The vapour pressure of a substance describes how readily molecules at the surface of the substance enter the gaseous phase. At the boiling point of a liquid, the liquid's vapour pressure is equal to or greater than the atmospheric pressure exerted on the surface of the liquid. Since the atmospheric pressure at higher elevations is lower than at sea level, the boiling point of water decreases as the elevation increases. The atmospheric pressure at sea level is 760 mmHg. This pressure decreases by 6.50 mmHg for every 100 m increase in elevation. Part A What is the boiling point of water at an elevation of 6000 m ? Express your answer with the appropriate units using three significant figures. Elevation Pressure > View Available Hint(s) 0m 760 mmHg 695 mmHg Peset Tempjetes Symbols uhdo redo 1000 m keyboard shortcuts Help 2000 m 630 mmHg T = 94.3 The boiling point of water decreases 0.05 °C for every 1 mmHg drop in atmospheric pressure

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

Chapter10: Solids, Liquids, And Phase Transitions

Section: Chapter Questions

Problem 69AP

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