In freundlich adsorption isotherm, the value of 1/n is :

Options

A. between 0 and 1 in all cases
B. between 2 and 4 in all cases
C. always 1 in case of physical adsorption
D. always 1 in use of chemical adsorption

Answer

A

Explanation

Freundlich isotherm is related with the pressure of gas adsorbed, as follows
`(x)/(m) = k.p^(1//n)`
Where `(x)/(m)` = amount of gas (x ) adsorbed over the surface of mass (m).
p = pressure of gas
k = freundlich constant
Thus, value of ‘n’ is always greater than 1 and thereforen value of 1/n lies between 0 and 1.