AQUEOUS SOLUTIONS.—ARCHIBALD. 
299 
cular conductivities at 18°C, expressed in terms of 107° times 
the specific conductivity of mercury at 0°C. The concentrations 
of ions are the ratios of the specific molecular conductivity to 
specific molecular conductivity at infinite dilution, divided by 
the dilution. 
Results of Observations on Mixtures. 
The following table contains both the data for, and the 
results of, the calculation of the conductivity of each mixture 
examined. 
Concentration of the 
Constituent Solu- 
Concen- 
tration of 
ions inthe 
Mixture. 
657 
.605 
.639 
.588 
oot 
482 
.3 160 
3105 
.2740 
2012 
2360 
2141 
1544 
1332 
1210 
.0700 
.0631 
0598 
.0542 
03485 
02860 
tions. 
+ K,SO, : 4 Na,SO,, 
1,000 2.000 
.8263 u 
.9915 | 1.998 
u 1.667 
u 1.427 
u .9982 
4957 .9975 
u | ,6658 
a .4996 
4166 .5050 
3393 u 
2500 u 
u 2525 
u 1683 
u 1262 
1000 1010 
u .0800 
u 06734 
u 05050 
04000 u 
02500 u 
01500 i 
.02570 
Dilution in the 
Mixture. 
+ K,S0,-sNa,SO,. 
-7940 -6030 
.8463 .6510 
-7959 -6050 
8742 .6790 
.9441 7440 
1.096 8060 
1.4738 1.272 
1.837 1.634 
2.112 1.908 
2.281 2.077 
2.509 2.304 
2.795 2.576 
4.121 3.840 
4,933 4.554 
5.463 5.024 
10.02 9.870 
11.18 11.03 
12.01 11.86 
13.33 13.20 
22.28 21.95 
26.96 26.25 
30.63 30.50 
Conductivity of Mixture. 
Caleu- 
lated. 
746.0 | 
707.2 
743.4 
687.7 
648.0 
564.7 
438.5 
363.6 
320.9 
300.6 
276.0 
250.3 
180.5 
155.7 
141.5 
81.89 
73.81 
69.96 
63.40 
40.76 
33.45 
30.05 
| Observed. 
739.0 
699.7 
738.4 
682.9 
645.4 
| 565.9 
436.8 
364.4 
322.1 
301.2 
275.5 
249.5 
180.9 
155.2 
141.3 
| 81.90 
73.71 
70.05 
63.49 
40.83 | 
33.36 
30.12 
| 
Difference 
per cent. 
+1.47 
+1.06 
+ 0.67 
+0.68 
+0.40 
— 0,21 
+0.38 
— 0.21 
— 0.37 
—0.19 
+0.18 
+0.31 
— 0.22 
+0.32 
+0.14 
— 0.01 
+0.13 
— 0.12 
— 0.14 
—0.17 
+ 0.26 
— 0.23 
