and Tivo New Types of Viscosity. 15 



Table IV. 

 The number of gram-equivalents per litre is 1000 v L n. 



IOOOjv? ... -0001 -001 -01 -1 -5 1 2 3 4 5 6 



10(^w)3 ... -0464 -10 -2154 -404 '794 1 136 1-442 1-587 1710 1-82 



NaCL 



\ V /*1 exp. ... 1-017 1-038 1-081 1-175 ... 1-350 1-405 1-427 1*431 1-429 

 „ calc. ... 1-019 1-040 1-087 1-186 ... 1*374 1-423 1-428 1-413 1-385 



BaCl 2 . 



X i7o/A^exp 1-151 1-331 ... 1-577 ... 1*862 



„ calc 1144 1-307 ... 1-598 ... 1-872 



(NH 4 ) 2 S0 4 . 



X J7 A»; exp 1-698 1-767 1*811 1*799 1-758 1-715 1-647 



„ calc 1-59 1-709 1-804 1*828 1-807 1*763 1-695- 



ZnS0 4 . 

 1C00 v x n ... -00001 

 110(^^)3... -02154 

 \ ilJ\v exp. ... 1-040 ... 1-605 2-475 ... 3-205 ... 2*703 ... 2-257 

 „ calc. ... 1*068 ... 1*68 2-42 ... 3*29 ... 2*63 ... 191 



From this it appears that (15) expresses the most charac- 

 teristic features of the conductivity of aqueous solutions over 

 the whole range of concentrations. The maximum value 

 given by the formula is sometimes displaced from the position 

 in which it is yielded by experiment, but I have not gone 

 into this minor point, because the experimental values are 

 involved in uncertainty by the assumption that the conduc- 

 tivity of the water of a solution is not altered by the presence 

 of the solute. This is most improbable, so I have not sought 

 at present to improve the comparison given in the above 

 table, which establishes the two fundamental points that while 

 r} the viscosity of the solvent enters by one type of viscosity, 

 7} the viscosity of the solution enters by another, and also 

 that for such aqueous "solutions the ionization is complete, 

 because, if it were not so, it would enter as a fraction into 

 the coefficient of (vi«)s, since in (13) n is multiplied by i. 

 We have thus a double proof that in aqueous solutions such 

 as these the ionization is complete, i disappears from the 

 formula (13) both as a factor of the right-hand side, and as a 

 factor of the term in nh There is also another strong proof 

 that in aqueous solutions ionization is complete at all con- 

 centrations. In ** The Molecular Constitution of Aqueous 



