372 



Dr. J. Shields on Hydrolyi 

 N 



40 



Potassium Cyanide. 



t. 



0,-*. 



*. 



G-x. 









2-38 



000 



4870 





2 



2-20 



0-18 



48-52 





4-5 



210 



0-28 



48-42 



(449)xl0- 6 



8-5 



2-00 



033 



48-32 



732 



22 



1-83 



0-65 



48-15 



602 



44 



1-59 



079 



47-91 



683 



112 



117 



1-21 



47-49 



759 



191 



100 



1-38 



47-32 



634 



303 



72 



1-66 



4704 



765 



1351 



016 



222 



46-48 



742 









Mean 



= 702-4 xlO" 6 



K =0-001336. 



A =0-000557, or 2*34 per cent, of salt hydrolysed. 



N 



27^ Potassium Cyanide (concentrations in % Jq gram- 

 molecule per litre). 



t 



C.,-x. 



X. 



C-x. 









4-73 



o-oo 



97-40 





2 



4-42 



031 



97-09 





5 



411 



062 



96-78 



(1050) xlO" 6 



10 



3 86 



0-87 



96-53 



(893) 



23 



3-57 



1-16 



9624 



728 



36 



3-26 



1-47 



9593 



728 



60 



294 



1-79 



9561 



686 



122 



2 30 



2-43 



94-97 



720 



180 



202 



271 



94-69 



653 



Mean = 703 XlO" 6 



K= 0-001328. 



A =0000553, or 2*35 per cent, of salt hydrolysed. 



20> 



and 



40 



mole- 



Sodium Carbonate. 



Experiments were made with J, -j^, 

 cular normal solutions of sodium carbonate. 



The titrations were made with the aid of phenol phthalein at 

 the ordinary temperature of the laboratory. In this way the 

 amount of standard acid added corresponded only to one half of 

 the real concentration of the salt in hundredths of a gram-mole- 

 cule per litre, as the solution becomes practically neutral when 

 the unaltered sodium carbonate has been converted into sodium 

 hydrogen carbonate. This would necessitate the doubling of 



