This equation is known as Freundlich adsorption isotherm or Freundlich adsorption equation. As this relationship is entirely empirical, in the case where adsorption behavior can be properly fit by isotherms with a theoretical basis, it is usually appropriate to use such isotherms instead (see for example the Langmuir and BET adsorption theories).
This equation is known as Freundlich adsorption isotherm or Freundlich adsorption equation. As this relationship is entirely empirical, in cases where adsorption behavior can be accurately modeled by isotherms with a theoretical basis, it is usually preferable to utilize such isotherms (see examples like the Langmuir and BET adsorption theories).