Freundlich Adsorption Isotherm: Adsorption is a reversible process and is accompanied by a decrease in pressure of the adsorbate (gas). Therefore, an increase in pressure increases the extent of adsorption. If ‘x‘ is the mass of a gas adsorbed (adsorbate) on the surface of a solid (adsorbent) whose mass is ‘m‘, then the extent of adsorption at equilibrium on the surface of adsorbent is expressed as x/m. A graph plotted between the extent of adsorption (x/m) and the pressure of a gas (P) at constant temperature is known as “Adsorption Isotherm“. It is clear from the graph that in the … Continue reading Freundlich Adsorption Isotherm