Freundlich adsorption isotherm is given by the expression `(x)/(m) = kp^(1//n)`. Which of the following conclusions can be drawn from this expression ?

Options

A. When `1/n=0,` the adsorption is independent of pressure
B. When `1/n=0,` the adsorption is directly proporational to pressure
C. When `n=0,x/m` vs p graph is a line parallel to x-axis
D. When `n=0,` plot of `x/m` vs p is a curve

Answer

A, D

Explanation

`x/m=kp^(1/n).` When `1/n=0,x/m=kp^(0)=k` (constant) i.e., it becomes independent of pressure. Hence, (a) is correct and (b) is wrong. When `n=0, x/m=k p^(oo).` Hence,` x/mvsp` cannot be linear parallel to x-axis but will be a curve. Hence, (c ) is wrong and (d) is correct.