Question $3(10$ points$)$

The relative permeability of oxygen and hydrogen, $,$ in a membrane is measured to be

$0\mathrm{.}4,$ where $Hi$ is Henry's law constant, representing the equilibrium between the gas phase and

the ionomer defined by Henry's law. If air is on one side of the membrane and pure hydrogen on

the other, both at atmospheric pressure, and the thickness of the membrane is $L,$ estimate the

relative rate of hydrogen permeation and oxygen permeation across the membrane film.