aeriko

10+ Year Member
May 11, 2008
2
0
Status
MD/PhD Student
My question is the following: if we have a closed system (a container with fixed volume) filled with oxygen and we pump 80% argon and 20% oxygen at a constant rate while in the system there is also a small hole that allows some of the gas to leave the system,is this possible for the gases to separate with the argon being at the bottom of the container while the oxygen rests at the upper part of the container?

Thank you very much.
 
OP
A

aeriko

10+ Year Member
May 11, 2008
2
0
Status
MD/PhD Student
Thank you very much!I didn't know about the law of effusion.

So, do you suggest that according to Graham's law,because the molar mass of argon is bigger of the oxygen, the oxygen will be diffused out of the container at a faster rate and argon will take all the place in the container,or not??
 

BlackSails

10+ Year Member
Apr 4, 2007
865
3
Status
Pre-Medical
Thank you very much!I didn't know about the law of effusion.

So, do you suggest that according to Graham's law,because the molar mass of argon is bigger of the oxygen, the oxygen will be diffused out of the container at a faster rate and argon will take all the place in the container,or not??
Depending on what rate gas is pumped in, yes.

However, I dont understand how the rate of effusion is not concentration dependant.