124 Mr. W. W. J. Nicol on the Molecular 
The effect of concentration is here the reverse of that in the 
case of the chlorides. 
(3) In Combination with N0 3 . 
(K-Na)X0 3 = 10-36 = A. 
(4) In Combination with (C10 3 ). 
(K-Na)C10 3 = 10-56 = A. 
(5) In Combination with (OH). 
(K-Na)OH = 10-06 = A. 
Table IV. contains all the above. 
Table IV. 
~So. in 
Table I. 
X. 
KW0 8 . 
NairOg 
Diffi 
A. 
11-16. 
5-0 
200674 
1954-96 
51-78 
10-36 
13-17. 
2-0 
187958 
KC10 3 
1858-85 
NaCaO a 
20-73 
10-36 
18-19. 
1-0 
184649 
KOH. 
1835-93 
NaOH. 
10-56 
10-56 
24-25. 
2-0 
1815-52 
1795-40 
20-12 
10-06 
The above results may be summed up as follows : — The value 
of (K-Na)R, where R = C1 3 (^) . N0 3 . C10 3? or OH, 
is a number lying between lO'O and 10*56 ; and it is to some 
extent dependent on the strengths of the solutions compared. 
B. The Alteration in the Molecular Volume of a Salt-Solution 
resulting from the replacement of one Acid-radical by 
another. 
(a) The replacement of N0 3 by CI. 
(1) In combination with Potassium. 
K(K0 3 -C1) = 10-98 to 11-4 = A. 
(2) In combination with Sodium. 
Na(N0 3 -Cl) = 11-28 to 11-51 = A. 
