at certain temperature,the r m s velocity for o2 is 400m/sec at the same temperature,the r m s velocity for - Physics - Kinematics

Question

at certain temperature,the r m s velocity for o2 is 400m/sec at the
same temperature,the r m s velocity for h2 molecules will be?

Pintu B. · Accepted Answer

Dear Student ,
As according to the kinetic theory of gas we know that the rms
velocity of a gas molecule is ,
c=3RTMNow the let at temperature T K rms velocity of O2 is 400 m/s 
So , cO2=3RTMO2
1So at the same tempereature rms velocity of the H2 molecules are ,cH2=3RTMH2
2Now dividing equation 1 by equation 2 we get , cO2cH2=MH2MO2⇒cH2=cO2MH2MO2⇒cH2=400232=400116=400×4=1600 m/s
Regards

at certain temperature,the r m s velocity for o2 is 400m/sec.at the same temperature,the r m s velocity for h2 molecules will be?