Assuming same molecular size, the diffusion coefficient scales with the random speed of thermal motion. There is also an inverse dependence upon pressure. Oxygen's thermal speed is sqrt16 = 4 times less than H2.
Because molecules are not rigid spheres, this is an approximation.
which of the following correctly compare the rate of diffusion of oxygen to that of hydrogen
1) 1:4
2) 4:1
3) 16:1
1 answer
1 answer