MIXTURES OF ELECTROLYTES.—McINTOSH. te 
The two sets of observations agree very well together, the 
differences between calculated and observed values being of the 
same sign and in general for mixtures of about the same mean 
concentration, of approximately the same magnitude. 
The two series of mixtures of strong solutions shew that the 
differences increase rapidly as the constituent solutions are more 
and more nearly saturated, reaching in the case of practically 
saturated solutions 6.4 per cent. 
(B.)—Sodium Chloride and Hydrochloric Acid. 
The conductivities of the following series of mixtures of 
hydrochloric acid and sodium chloride solutions were measured : 
CONSTITUENT SOLUTIONS 
CONCENTRATION : GRAMME-MOLECULES | | 
PER LITRE. CONDUCTIVITY OF 
MIXTURE, 
x 10° 
Na Cl. HCl 
| 
| 
2.02 4.55 | 4932 
ee 3.89 | 4492 
oy 3.29 4089 
eS 3.19 4073 
a 3.06 3958 
Se 2.66 3623 
e 2.56 3489 
“ 2.34 3323 
1.04 4.55 - 5069 
= 3.97 4682 
ve 3.80 4315 
Ss 3.10 3989 
Ss 2.86 3696 
a 2.18 3112 
cs 2.11 3025 
gs 1.93 2824 
a4 1.58 2427 
ss 15116) 1928 
0.607 1.120 1815 
gs 0.970 1620 
es 0.815 1412 
S 0.730 1296.5 
s 0 603 1114 
a 0.485 952 
