(a)
Freundlich adsorption isotherm is
$x/m = kp^{1/n}$
Here, $p,\ k\ and\ n$ are constant.
Note Freundlich isotherm is not applicable at high pressure.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.