A gas containing air and water vapor is in equilibrium with a liquid at 24 ℃ and 1 bar pressure . While the liquid is nearly pure water, an engineer wishes to determine the trace amounts of oxygen and nitrogen dissolved in the liquid and also the amount of water vapor in the gas phase.

The Antoine equation coefficients for water (0 to 60 C ) with in C and in mm Hg are : A= 8.10765 B=1750.286 C=235.000

What is the vapor pressure of water at this temperature in mm Hg.

What is a pressure of 1 bar in mm Hg?.

22.38

750.1
What is the mole fraction of water in the gas phase at this temperature?