Vapor pressure

Question

T/F: A sample of nitrogen gas collected at 24◦ C and 745 Torr has a vapor pressure of 745 Torr.

Answer 1

False:

 

     If you ignore the amount of water vapor in the air, the vapor pressure of nitrogen will be 745 torr.  The value of 745 torr is the sum of the nitrogen gas and the water vapor pressures.

 

     The actual vapor pressure of the niteofen gas will be less than 745 torr.