In the graph of Freundlich isotherm which parameter is present by the slop of the line

Freundlich adsorption isotherm

K and n are constants for a given adsorbate and adsorbent at a particular temperature. At high pressure 1/n = 0, hence extent of adsorption becomes independent of pressure. Freundlich adsorption isotherm, an adsorption isotherm, is an empirical relation between the concentration of a solute on the surface of an adsorbent to the concentration of the solute in the liquid with which it is in contact.

For Freundlich isotherm:

logmx=logK+1/nlogp
Slope =1/n, intercept =logK

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