Langmuir isotherm equation

Langmuir isotherm equation

[′laŋ‚myu̇r ′īs·ə‚thərm i‚kwā·zhən] (physical chemistry) An equation, useful chiefly for gaseous systems, for the amount of material adsorbed on a surface as a function of pressure, while the temperature is held constant, assuming that a single layer of molecules is adsorbed; it is ƒ = ap /(1 + ap), where ƒ is the fraction of surface covered, p is the pressure, and a is a constant.