Register to reply 
Rate of effusion dependance on pressure 
Share this thread: 
#1
Feb1212, 10:16 AM

P: 260

In my class rate of effusion was told to be directly proportional to the mean speed of gas molecules which is intuitive and i understand. RMS speed of molecules is √3RT/M
So rate of effusion is inversely proportional to sqaure root of molar mass But i dont understand how rate of effusion is directly proportional to pressure RT = PV So RMS speed = √PV/M so rate of effusion should be proportional to square root of pressure right? But apparently its not, plz explain me why Thank you! 


#2
Feb1412, 03:50 AM

P: 412

P = nkT. Then the number density (number of molecules per unit volume) is directly proportional to the pressure. The more molecules per unit volume, the greater the effusion through an opening. 


Register to reply 
Related Discussions  
Flow rate depending on pressure with constant inlet rate.  Engineering, Comp Sci, & Technology Homework  1  
Thermodynamics Rate of Effusion  Advanced Physics Homework  0  
Gas Effusion Rate  Biology, Chemistry & Other Homework  2  
Rate of change of pressure  General Physics  5  
Converting pressure to flow rate  Introductory Physics Homework  4 