ON ELECTROLYTIC CONDUCTIVITY IN CONCENTRATED SOLUTIONS 



243 



The several columns are as follows 



Older values to which 



The formula of the electrolyte and also the values for the constants of equation (1). 



The percentages, i.e. the number of parts by weight of the electrolyte in 100 parts of the solution. 



Interpolated points are indicated in this column by parentheses. Experimental numbers 



excluded from the calculation of the constants are marked I. 



Kohlrausch attributes less exactness are marked.* 

 m., i.e. gramme equivalents per litre (m = 1000 yj). 

 k, i.e. specific conductivity in ohms -1 cm. -1 . 



V. A= — , i.e. equivalent conductivity. 

 V 

 T, i.e. gramme equivalents of electrolyte per kilogramme of the solution (T = 1000 y). 



I 



II 



III 

 IV, 



VI 



VII. A M = — , i.e. specific conductivity divided by the number of equivalents per gramme of the 



y 



solution. 

 VIII. As in column VII., but calculated from equation (1). 

 IX. Percentage differences between A M observed and A M calculated. 



X. As in column IX., but for points outside the range within which equation (1) applies. 

 XI. As in column IX., but for interpolated points. 



This arrangement of the percentage differences in three columns facilitates a review 

 of the evidence for or against the applicability of equation (l). 



Table A. 



I. 



II. 



III. 



IV. 



V. 



VI. 



VII. 



VIII. 



IX. X. XI. 





p 



1000 tj 



(m ; 1/u) 



10V 



A = * 



1000 y 



(r) 



Am obs. 



A M calc. 



Percentage Differences. 



Am calc. - Am obs. 





% 























5 



0-691 



690 



99-9 



0-671 



103-0 



101-9 





-11 





KC1 



10 



1-427 



1359 



95-2 



1-342 



101-3 



101-2 



-o-i 







a= 102-6 



15 



2-208 



2020 



91-5 



2-011 



100-4 



100-5 



+ o-i 







b= -1-067 



20 



3039 



2677 



88-1 1 



2-681 



99-7 



99-7 



+ 0-0 









21 



3-213 



2810 



87-5 



2-816 



99-8 



99-6 



-0-2 









5 



0-948 



918 



96-8 



0-934 



98-2 



98-1 



-o-i 







NH 4 C1 



10 



1-923 



1776 



92-4 



1-869 



95-1 



95-2 



+o-i 







a= 101-0 



15 



2-924 



2586 



88-4 



2-803 



92-2 



92-3 



+ 0-1 







b= -3-094 



20 



3-952 



3365 



85-0 



3-738 



90-0 



89-4 



-0-7 









25 



5-003 



4025 



80-5 



4-671 



86-2 



86-5 



+ 0-4 









5 



0-884 



672 



76-0 



0-855 



78-6 



78-4 



-0-3 









10 



1-830 



1211 



662 



1-709 



70-9 



71-2 



+ 0-4 







NaCl 



15 



2-843 



1642 



57-8 



2-564 



64-1 



64-1 



+ 0-0 







a = 85 - 5 



20 



3-924 



1957 



49-9 



3-419 



573 



57-0 



-0-5 



... 





b= -8-34 



25 



5-085 



2135 



42-0 



4-274 



50-0 



49-9 



-0-2 









26 



5-325 



2151 



40-4 



4-444 



48-4 



48-4 



+ o-o 









26-4 



5-421 



2156 



39-8 



4-512 



47-8 



47-9 



+ 0-2 







1 In Kohlrausch and Holborn stated as 88-9. The calculation of the values for r and A M involved the recalcu- 

 lation of the corresponding values for m and A. Only three errors of calculation were thus incidentally discovered. 



