Quote:
Originally Posted by Howlermonkey
Incorrect.
"Tire pressure" is the pressure differential between atmospheric and the pressure inside the tire.
The flow of the pure nitrogen from the higher energy state (inside the tire) through the porus tire to the lower energy state (outside the tire) ensures very little, if any oxygen contacts anything but the outside surface of the tire.
|
So, if N2 can flow through a porous barrier, from one side that is at 14.7 psia, to another side that is at 11.8 psia (roughly the partial pressure of atmospheric N2), then...
Why can't O2 flow across that same porous barrier, from one side that is at about 2.8 psia (roughly the partial pressure of atmospheric O2) to the other side that is at 0 psia?