Question

If 4 tubes of a car is filled to the same pressure with N2,O2,H2,CO2 seperately,which gas will be filled first?

Answer 1

here we use concept of Graham 's Law of diffusion .
according to this theory ,
at constant tempreture and pressure diffusion of all non -reactive gases are inversely proportional to square root of their density or molar mass
e.g
r1 /r2 = √( M2/M1)

it means gas of higher molar mass , lesser the rate of diffusion .

here order of molar mass
H2 < N2 < O2 < CO2

so, order of the rate of diffusion ,
CO2 < O2 < N2 < H2

so ,H2 will be fill first

Answer 2

Answer:

use Graham's law here

hope it helps....