Answer to Question #98979 in General Chemistry for m

Question #98979
A sample of oxygen gas was collected via water displacement. Since the oxygen was collected via water displacement, the sample is saturated with water vapor. If the total pressure of the mixture at 26.4°C is 719 torr, what is the partial pressure of oxygen? The vapor pressure of water at 26.4°C is 25.81mm Hg.
1
Expert's answer
2019-11-19T08:00:02-0500

The total pressure exerted by a wet gas is equal to the sum of the partial pressure of the gas itself + the vapor pressure of water at that temperature.

"\\implies p_{total}=p_{H_20}+p_{gas}"


Given "p_{gas}=25.81mm Hg" ;"p_{total}=719torr=719mmHg"


"\\implies p_{gas}=719-25.81=693.19mmHg"


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