Prof. W. Ostwald's Electrochemical Researches. 115 



stronger the acid. As examples, inalonic and oxalic acids are 

 given. 



Malonic Acid, CH 2 (COOH) 2 . 



: P . 



v. 



a» 1 . 



m 2 . 



m. 



log tan m. 



Diff. 



i 



2 



4-48 



4-48 



4-48 



8-8940 



01497 

 0-1476 

 0-1397 

 0-1406 

 0-1387 

 0-1393 

 01371 

 0-1433 

 0-1454 

 01478 



2 



4 



6-32 



6-35 



6-34 



90457 



3 



8 



8-90 



8-83 



8-87 



9-1933 



4 



16 



1246 



1214 



1215 



9-3330 



5 



32 



16-60 



16-54 



16-57 



9-4736 



6 



64 



22-39 



22-15 



22-27 



9-6123 



7 



128 



2945 



29-43 



2944 



9-7516 



8 



256 



37-95 



37-53 



37-74 



9-8887 



9 



512 



47-40 



46-82 



47-11 



0-0320 



10 



1024 



56-60 



5640 



56-39 



01774 



11 



2048 



65-18 



64-20 



64-69 



0-3252 



12 



4096 



71-66 



70-48 



71-07 







13 



8192 



76-70 



75-26 



75-98 







At a dilution of 2 litres the conductivity of malonic acid is 

 about 10 per cent, less than that of monochloracetic acid ; as 

 dilution increases the difference between the conductivities of 

 these two acids decreases, until the conductivities are equal at 

 512 litres dilution ; from this point onwards malonic acid 

 surpasses acetic acid; when the half maximum is past, the 

 second hydrogen atom of malonic acid begins to take part in 

 the electrolysis. Oxalic acid, which is a stronger acid than 

 malonic, shows this greater conductivity than the monobasic 



Oxalic Acid, H 2 C 2 4 . 



p. 



v. 



m v 



m 2 . 



m. 



log tan in. 



Diff. 



1 



2 



28-18 



28-16 



28-17 



9-7288 



01296 

 0-1283 

 0-1330 

 0-1437 

 0-1524 

 0-1592 

 0-1699 

 0-2052 

 0-3763 



2 



4 



35-85 



35-79 



35 82 



98584 



3 



8 



44-14 



44-10 



4412 



9-9867 



4 



16 



52-7 



52-8 



52-8 



0-1197 



5 



32 



61-3 



61-4 



61-4 



0-2634 



6 



64 



690 



690 



690 



0-4158 



7 



128 



751 



75-0 



75-1 



0-5750 



8 



256 



79-8 



79-8 



79-8 



7449 



9 



512 



83-6 



83-5 



83-6 



09501 



10 



1024 



87-2 



87-3 



87-3 



1-3264 



11 



2648 



92-1 



91-9 



920 







12 



4096 



98-9 



98-4 



98-7 







13 



8192 



118-5 



118-5 



118-5 







14 



16384 













acids in a very marked way ; the maximum of the monobasic 

 acids is passed by oxalic acid. The falling off in the conduc- 

 tivity, which is customary with the monobasic acids when the 

 dilution is greater than 1024 litres, is hidden by the partiei- 



12 



