﻿698 Mr. D. C. Henry on a 



observations of Brown * on the adsorption of water vapour 

 (fig. 4). 



Fig. 4. 



lo gr 



10 



00QZ5 00026 00017 j= 



The Isostere, from Brown's Observations. 



(1) 06 = 3-35 gms. (2) a=2'70gms. (3) a = 2-0(Tgms. 



.(4) a=0-57gm. ( 



From the empirically found values of B x , A, can be deduced. 

 Table IV. shows the values so found for various adsorbing 

 systems, and for comparison, where it is known, the value 

 of Q— RT, where Q is the total heat of adsorption expe- 

 rimentally determined. 



Two Components — Adsorption of Mixed Gases. 



For moderately small concentrations, relations can be 

 deduced from equation (6) which express the mutual influence 

 of two gases on each other's adsorption. Since no experi- 

 mental results are available to. test these adequately, they are 

 merely quoted for reference : — 



I. X l5 X 2 represent the actual adsorptions of the two 

 components under partial pressures p x and^> 2 - Pio denotes the 



* Brown, Phys. Rev. xvii. p. 700 (1921). 



