417 
XIII. Magnesium Bromide. 
XIV. Calcium Bromide. 
Equivalent 
dilution 
Equivalent 
P v 
Equivalent 
dilution 
Equivalent 
t' v 
44.182 
59.3 
21.333 
62.7 
88.365 
61.8 
42.667 
65.0 
176.730 
63.7 
85.334 
66.8 
353.460 
65.1 
170.668 
68.4 
706.920 
66.1 
341.336 
69.5 
1413.840 
66.9 
682.672 
70.4 
2827.680 
67.3 
1365.344 
71.0 
/'■Qo is taken 
i to be 67.5 
2730.688 
71.2 
p-an calculated from Kohlrausch’s 
data = 69.3 obtained = 71 .2 
Now, Noyes and Falk 1 ) give the cation transference numbers 
for HC1 and NH 4 C1 at 0° at almost infinite dilution as 0.847 and 
0.490 respectively. By using these values, the ionic velocities are 
calculated from f determinations for HC1 and NH 4 CI. Thus, 
Substance 
Cation transport 
number 
Ionic velocities 
• H' 223.9 
HC1 
264.4 
0.847 
Cl' 40.5 
NH 4 - 39.2 
NH 4 C1 
80.0 
0.490 
Cl' 40.8 
Now, the ionic velocity of CF is taken as 40.8 as the more 
accurate figure, and from it the following ionic velocities are deduced 
by applying Kohi.rausch’s law [i = u v 
Substance 
Equivalent p^ 
Ionic velocities 
Li Cl 
60.5 
Li’ 
= 19.3 
Sr CL 
72.5 
'k Sr “ 
= 31.7 
Mg Cl 2 
66.6 
Va Mg' 
' = 25.8 
Again, by using these values, other ionic velocities are calculated 
as is shown in the following table ; 
x ) Loc. cit. 
