Kinetics of adsorption of single gases and their binary mixture on an energetically homogeneous surface are studied theoretically using the Statistical Rate Theory (SRT) of interfacial transport. Additionally, the influence of intermolecular interactions on the rate of adsorption is modeled using the Regular Adsorbed Solution Theory. The theoretical results are classified and assigned to different types of experimental conditions under which the changes of the adsorbate concentration near the adsorbing surface are considerable or they are negligible. Predictions of the theory are verified using adsorption data measured in real systems. (C) 2010 Elsevier B. V. All rights reserved.