362 



400 



350 



>. 300 



a 



ra 



a 

 o 



250 



200 



150 



100 



50 



/I6 



/32 /64 /128 /256 /512 



-»■ /ogf v (number of litres per Grammolecule) 



/1024 



Molecular conductivity. 



1. Sulphonacetic acid. 



2. Sulphonpropionic acid. 



3. Propionanilide-a-sulphonic acid. 



4. Disodium sulphonacetate. 



5. Disodium sulphonpropionate. 



6. Monosodium sulphonacetate. 



7. Monosodium sulphonpropionate. 



8. Sodium propionanihde-a-sulphonate. 



Now, a correction may be made for the fact that the concen- 

 tration of the HA'-ions is smaller than agrees with reaction I, 



