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 7600 m ? Express your answer with the appropriate units using three significant figures. Elevation Pressure > View Available Hint(s) Om 760 mmHg 1000 m 695 mmHg HÀ 2000 m 630 mmHg Ω The boiling point of water decreases 0.05 °C for every 1 mmHg drop in atmospheric pressure. T = 75.30 C Enter your answer using units of temperature. No credit lost. Try again.

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 7600 m ? Express your answer with the appropriate units using three significant figures. Elevation Pressure > View Available Hint(s) Om 760 mmHg 1000 m 695 mmHg HÀ 2000 m 630 mmHg Ω The boiling point of water decreases 0.05 °C for every 1 mmHg drop in atmospheric pressure. T = 75.30 C Enter your answer using units of temperature. No credit lost. Try again.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

The vapor pressure of ethanol (C2H5OH) at 19 °C is 40.0torr. A 1.00-g sample of ethanol is placed in a 2.00 L containerat 19 °C. If the container is closed and the ethanolis allowed to reach equilibrium with its vapor, how manygrams of liquid ethanol remain?
How to identify which one is the highest boiling point?
Toluene (C7H8) is a common laboratory solvent with ΔH°vap = 38.1 kJ/mol. If the vapor pressure of toluene at 89.6 °C is 380. torr, at what temperature, in °C, will toluene have a vapor pressure of 507 torr?
At high altitudes, the ambient air pressure can be significantly less than 1 bar, so water boils at a lower temperature than 100 C. What is the boiling point of water at an altitude where the ambient air pressure is 0.4 bar? The enthalpy of vaporization of water near its boiling point is 40.7 kJ/mol.
The vapor pressure of liquid diethyl ether, C2H5OC2H5, is 40.0 mm Hg at 245 K. A sample of C2H5OC2H5 is placed in a closed, evacuated container of constant volume at a temperature of 383 K. It is found that all of the C2H5OC2H5 is in the vapor phase and that the pressure is 49.0 mm Hg. If the temperature in the container is reduced to 245 K, which of the following statements are correct?Choose all that apply. Some of the vapor initially present will condense. No condensation will occur. Liquid diethyl ether will be present. The pressure in the container will be 40.0 mm Hg. Only diethyl ether vapor will be present.
The vapor of liquid bismuth is 400 mm Hg at 1.72x10^3 K. Assuming that it’s molar heat of vaporization is constant at 184 kj/mol, the vapor pressure of liquid Bi is ____ mm Hg at a temperature of 1.70x10^3. The normal boiling point of liquid ethane thiol is 308 K. Assuming that its molar heat of vaporization is constant at 26.7 kj/mol, the boiling pint of C2H5SH when the external pressure is 0.753 atm is ____ K.
At high altitudes, the ambient air pressure can be significantly less than 1 bar, so water boils at a lower temperature than 100 C. What is the boiling point of water at an altitude where the ambient air pressure is 0.72 bar? The enthalpy of vaporization of water near its boiling point is 40.7 kJ/mol.
29.Which of the liquids in the following pair has the lower vapour pressure? Propanol (CH3CH2CH2OH) / Methanol (CH3OH)
The figure shows the phase diagram corresponding to the element sulfur. Sulfur exists as liquid, gas, and two solids, rhombic and monoclinic. 1- Describe the phase changes that occur when S is decompressed (lower P) from 10 atm to 106atm at constant temperature of 100 °C. 2- Indicate the temperature and the pressure for the triple point B, and which phases coexist В 10.0 Solid(rhombic) Liquid 1.0 Solid (monoclinic) 5х 104 Gas A 1 x 104 95.4 114 119 445 Temperature (in degree C) Pressure (in atm)