BLACKMAS
B Y I'HILII'
The author shon-ecl in the PI2 ilosophicczl il/lagazi?ze,
I I,
418 (1.906),that the equations Yi'Ml.OH -
WI1X
= PT\l,Xl -
-
~ ~ \ l ~ . O H
- P*Z'hI,S -
~VUI\I,S,
- E*TlI,X2 -h I 1 S 2 - . . . . . . . . . . . . . .
- constant,
(in which /I%fl.OH, , Q ~ p;lf,s, ~ ~ wlIZx, , ~ ~etc., ~ represent ~ ~ the molecular conductivities, all measured at the same concentration ZI and a t the same temperature, of the bases RI,.OH and hl,.OH, and of the salts N,X, >I&, etc., respectively) can be used to calculate the molecular conductivities of salts and bases, whether soluble or insoluble, or stable or unstable in aqueous solution. The folloxving tables give the results of a large number of molecular conductivities calculated by the aid of the above equations. Table I gives molecular conductivities at IS', and Table I1 those at 25'. If the values be calculated by means of the equations' /&hfl.OH ~~
= p(z'h1,
+ FvOHs etc., and l*u>\r,x= pv&flf pvx, etc*
.~
I n continuation of the Impers i n I'roc. Chem. Soc., 21, 237 (190s); Cheni. News, 93, 284; 94, 164, 176 (1906); 95, 133 (1907); Phil. Mag., 1 1 , ~ I G ; 12, 1.50, 53' (1906); 14, 21.5 ( I 9 0 j ) . Phil. Mag., 1 2 , I j I (1906): Clieni. Sews, 94, 176 ( ~ g o G ) , using the quantities there given. The results \vi11 lie found in remarkably close agreement with t h e numbers here given.
F: l
-
3
*
N
.
n
j
Ph ili$ B lacknz an
T a b l e s of AIoleculas Conductivities
R
0
%
'
0
%
147
0 0
N
m
m m
1 00
0
2 0
N
0 L r
0 b
E; 0
:: 0
m 3
8 8
. I
3
. ..
TaOIes
of
?iolccu Lar Conductivities
1.51
T.LBLE. I1 I024
~
5 12
1024
-~
137 14s
138
Ij2
I49 I34 Ij2
Ij2
Ij2
128 16j I49
129
Ij2
13'
153 132
1-10
144
I43
I47
138
I39
IjO
Ij 2
I49
Ij0
I34
135
117
117
92 I28
93 I34 I 16 I18 97 97
11.3 I I6
94 93 107
111
Ij O
IjI
149 13'
150 132
162
166
14s
IjO
127
129 I43
I39 II 0 I20
I IO I2 I
I00
IO1
123
I 2j
IO0
IO1
I 16
117
IO2 I 14
127 125
104 118 128 126
IO2
103
138
143
I26
127
Tables
32
85
0)
Jlulecular Coiiductivitics
TABLEII-(Coizt~ m i d ) ,I 64 128 256
’
91
,
121
Y:
99
122
I28
1.34
240 219
24’7
2jI
226
230
243 242
249 249
253 254
206
21j
222
218 22j
203
214 214
221
203
213
320
118 232 211 232
231 19j 204
‘
15s
1024
512
I24 IO1
I
1 1
I2j I02
137 2jI
132 2j I
2 30 2 54 2 j j
230 2 54 2 j j
226
219 228 228
219 228 228
” 79 j
226
227
