ELECTRICAL CONDUCTIVITIES, ETC. 



143 



The temperature coefficients of conductivity, expressed in conductivity units, 

 increase rapidly with the dilution of the solution, and for weak organic acids, when 

 not much hydrated, decrease rapidly with rise in temperature. When the acids are 

 hydrated the temperature coefficients of conductivity are larger, and their increase 

 with dilution and decrease with rise in temperature both take place at a slower rate. 



The organic acids with the larger constants also have, in general, the larger tem- 

 perature coefficients of conductivity expressed in conductivity units. The ortho 

 acids usually have a somewhat larger coefficient than the meta and the para. The 

 meta and the para have very nearly the same values for the temperature coefficients 

 expressed in conductivity units. 



TEMPERATURE COEFFICIENTS IN PER CENT. 



The following coefficients in per cent were obtained; the heading means from 

 zero to next temperature. 



Acid. 



25 to 35 c 



v = 32 t> = 1024 t; = 32 = 1024 = 32 = 1024 



50 to 65 



Acetic 



Dichloracetic 



Trichloracetic 



Cyanacetic 



Phenylacetic 



Propionic 



a-Brompropionic 



/3-Iodopropionic 



Acetylpropionic 



n-Butyric 



a-Brombutyric 



Lsobutyric 



Hydroxy isobutyric. . 



Isovaleric 



Caprylic 



Malonic 



Dimethylmalonic. . . . 



Ethylmalonic 



Diethylmalonic 



Methylethylmalonic . 

 Isopropylmalonic. . . . 

 Dipropylmalonic 



Butylmalonic , 



Benzylmalonic 



Allylmalonic 



Succinic 



Monobromsuccinic. . 



Dibromsuccinic 



Pyrotartaric 



/-Tartaric 



Racemic 



Thiodiglycolic 



Tricarballylic 



Diphenylglycolic . . . 



Hippuric 



Citric 



Pyromucic 



Crotonic 



Maleic 



Fumaric 



Itaconic 



Citraconic 



Mesaconic 



2.62 

 2.18 

 2.20 

 2.29 

 2'32 

 2.56 

 2.00 

 2.25 

 2.74 

 2.38 

 1.86 

 2.35 

 2.71 

 2.10 



2.57 

 2.46 

 2.35 

 2.32 

 2.30 

 2.56 

 2.16 

 2.28 

 2.71 



2.69 

 2.43 

 2.33 

 2.07 

 2.33 

 2.43 

 2.06 

 2.32 

 2.29 

 2.33 

 2.03 



1.77 

 2.64 

 2.94 

 2.93 

 2.43 

 2.86 



38 

 02 

 28 

 62 

 08 

 2.29 

 2.65 

 2.45 

 2.32 

 2.22 

 2.35 

 2.45 

 2.27 

 2.25 



1.39 

 1.30 

 1.28 

 1.16 

 1.23 

 1.33 

 1.00 

 1.35 

 1.43 

 1.19 

 0.89 

 1.17 

 1.38 

 1.07 



3.00 

 2.08 

 2.69 

 2.54 

 2.64 

 2.97 

 2.08 

 2.39 



29 

 31 

 94 

 22 

 10 

 2.63 

 2.75 

 2.68 

 2.45 

 2.68 

 2.26 

 2.54 

 2.86 

 2.31 

 2.68 

 2.43 

 2.56 

 2.71 

 2.28 

 2.37 



1.43 

 1.40 

 1.27 

 1.06 

 1.31 

 1.34 

 1.02 

 1.32 

 1.22 

 1.23 

 1.47 



1.32 

 1.37 

 1.42 

 1.39 

 1.15 

 1.31 

 1.17 

 1.45 

 1.43 

 0.98 

 1.09 

 1.13 

 1.50 

 0.98 

 .1.17 

 1.34 

 1.36 

 1.25 

 1.33 

 1.28 

 1.30 

 1.30 

 1.36 

 1.26 

 1.30 

 1.42 



0.72 

 0.52 

 0.65 

 0.52 

 0.55 

 0.56 



0.74 



0.46 

 0.65 

 0.46 



0.71 

 1.47 

 1.52 

 1.59 

 1.28 

 1.56 



1.64 

 1.04 

 1.31 

 1.34 

 1.19 

 1.50 

 1.18 

 1.16 



1.11 

 1.42 

 1.40 

 1.49 

 1.30 

 1.57 

 1.23 

 1.23 

 1.55 

 1.02 

 1.37 

 1.38 

 1.17 

 1.45 

 1.29 

 1.15 



0.74 

 0.80 

 0.66 

 0.46 

 0.76 

 0.61 



0.69 

 0.65 

 0.16 

 0.84 



0.98 

 0.45 

 0.68 

 0.78 

 0.67 

 0.90 

 0.70 

 0.67 



0.79 

 0.90 

 0.59 

 0.79 

 0.51 

 0.57 



0.67 



0.39 

 0.70 

 0.34 

 0.46 

 0.80 

 0.82 

 0.71 

 0.79 

 0.87 

 0.78 

 0.81 

 0.79 

 0.74 

 0.73 

 0.94 



0.95 

 0.43 

 0.73 

 0.93 

 0.70 

 0.91 

 0.84 

 0.68 



