Question

Freundlich adsorption isotherm is:

• A. $\frac{x}{m}=K{P}^{1/n}$
• B. $x=mK{P}^{1/n}$
• C. $\frac{x}{m}=K{P}^{-n}$
• D. all of the above

Answer 1

The correct option is A $\frac{x}{m}=K{P}^{1/n}$

Freundlich adsorption isotherm: it is an empirical relationship between the quantity of gas adsorbed by a unit mass of solid adsorbent and pressure at a particular temperature.
The relationship can be expressed by the following equation: $\frac{x}{m}=K{P}^{1/n}$ ($n>1$)

Here x is the mass of the gas adsorbed on mass m of the adsorbent at pressure P, k and n are constants which depend on the nature of the adsorbent and the gas at a particular temperature.