Sunday, May 8, 2011

What effect does the temperature of nitrogen gas have on the pressure it exerts?

Nitrogen approximately follows the ideal gas law which
gives the relation between pressure and temperature as pV= nRT, where p is the absolute
pressure of the gas; V is the volume of the gas; n is the amount of substance of the gas
in moles; R is the gas constant (which is 8.314472 J*K^-1*mol^-1 in SI units); and T is
the absolute temperature.


Therefore from pV= nRT, we get p
= nRT / V. So as the temperature increases, for the volume and amount of the gas
remaining constant, the pressure exerted increases and as the temperature decreases, the
pressure exerted decreases.

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