130 ON THE CALCULATION OF THE CONDUCTIVITY OF 
The following table contains a statement of the measured 
and caleulated values of the conductivities of the above mixtures, 
with the concentrations of the constituent solutions, and the 
data necessary for the calculations, viz,°the dilutions of the 
respective electrolytes and their iomic concentrations, in the 
mixtures, these data being obtained by Prof. MacGregor’s 
graphical process. The measured values of the conductivity 
were obtained from the above observations by graphical inter- 
polation. 
Constituent Solu- ice | a WE: = 
oe Cena ae in the | © Conductivity, 3 
23 er mixture. 3B) a 8 Sane =) 
el gg |] a x 
| Sen | 3 5 
re Ci, |] IN, Ci | K Cl Na Cl. Sse | Calculated.) en = 
<i caeeal == aR | 
33, (1) 5.121) 6244 143 | 2.018 | 2312 2469 —6.4 
3.50 a6 Pe teZeeen) EG EOS 2206 2420 -—6 
SL00 €¢ 205 1855 | 1.950 |} 2202 | 2313 -—4.8 
2.50 <i lf |} .216 | 1.890 |} 2109 2190 —3.7 
2.00 oe } eI i) eeRDe i Theta | 2013 2049 -1.7 
3.88 | 5.00 || 26 1°14 | 2014 || o323" | 2451 |e 
es 4 50 ZO ie weal Si 1.998 || 2295 | 2429 —5.5 
3G 4:00 || .335 . 166 1.980 | 2292 =| 2377 —3.6 
oC 3.50 .388 .182 1.955 | 2261 | 2324 -2.7 
oC 3.00 .462 .205 1.916 | 2227 | 2260 -1.4 
OS 2.50 || .573 227 1.864 2174 2189 -0.7 
J 2.00 750 | .250 1.788 2096 | 2116 -1.0 
3.46 3.12 .412 2295 |} 1.848 | 2130.5 | 2160 = ies} 
21.28 3.80 . 2432 F2S245 | 1268.) slSibvon esi —(0.08 
2.87 4.69 .225 .202 1.924 || 2177 2222 —2 
The results of Bender’s experiments, as calculated by * Prof. 
MacGregor, are given below for comparison. 
coe Sor ea Coxpvenvrry. 
DIFFERENCE, 
PER CENT. 
K Cl. Na Cl. Measured. Calculated. 
2.0 2.0 1445 1458 +0.90 
3.0 220 1823 1808.6 —0.79 
20 3.0 1664 1660 ~0.24 | 
3.0 3.0 2007 1988.7 -0.91 
2.0 4.0 1858 1849.3 —(1).47 
3363) 4.0 2303 2239 .2 —-2.77 
4.0 4.0 2432 2345.3 — 3.56 
*Trans. N. 8. Institute of Science, Vol. rx, p. 101. 
