
#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: 403

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. 


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