I l.Ii I RI4 < ONDU< Tl\ II V, OlfcKOl I - 



obtain figures relating to the quanl I 



we multiply the specific conductivity by it 

 which contains I gram-equivalent (see page 22 



which represents the« < lucting power oi quival< i 



known as the equivalent or molecular t 



the sign a. When ii is determined for pro dilute 



a gradually increases, indicating thai I 



as a conductor im n i with dilution, I" 



extenl of this increase is found i<» I ome • 



proceeds. By plotting the values of the molecule 

 i\>' dilutions as a curve, the value at infinite dilul 

 by extrapolation. 'Plus value is repr< c. 



Now, lei us see how these facts bear out the 

 tii ii i. According to this hypothesis the conductivity d< 

 ber nf imis (see page IT . and since it is al a maximum Illa- 



tion, //" valut a •- must represent tin total 

 duced by the dissociation of t gran 



dilution. I f, therefore, we divide a by \ we obtain a val 

 which must represent the degree to which th< 

 various dilutions a1 which A is measured. Prom whal 1 

 garding the osmotic pressure of similar solutions, it 

 value a could also be calculated by finding th< 

 pression of freezing poinl a is greater than would 1" 

 number of dissolved molecules. An a matte 

 thai practically identical values are obtained many 



furnishing almosl incontrovertible proof in supp< 

 hypothesis. In the cases of weak ;i<i< Is and bases, ii 

 a value, called the dissociai istant K which 



tive values nf ,i at all dilutions. Since the activil 

 is dependenl upon the number of 1 1 and < »ll 

 by dissociation, it follows that it must be p 8 [1 



necessary to postpone a consideration of the ;■!':• 

 until we have studied mass n pag< 



Biological Applications. The practical val kn 



not bo much on any dired simple applic 

 explaining physiological pnx 

 which it has iu enabling us to ui 

 other phy8icochemical factors concerned in p 

 out a clear comprehension i 

 impossible to consider Buch problei 



•In ol 



gram r.|iir. 



