MESSRS. THOMAS MARTIN LOWRY AND PERCY CORLETT AUSTIN 
306 
Table XVIII.—Kotatory Dispersion of Potassium and Hydrogen Arsenyl Tartrates at 
20° C. 
Length of tube = 6 dm. 
(a) 2-5 
gr. (g\) mol.) tartaric acid + 1 
• 65 gr. | 
(ifd mol.) As.,0 ; j + 14 
gr- (i 
mol.) KOH in 
(6) 15 gr. (yo mol.) tartaric 
100 c.c. 
acid in 100 c.c. Solution 
Simple Formula. 
saturated 
with arsenious 
nvrl _ 20'148 
acid by boiling. 
L U x2 
-0P17 
• A. 
a. 
[M]. 
[M] A 2 . 
[Mi]. 
[M]—[Mi], 
cc. 
[M] approx. 
Cd 6438 
+5-10 
51-0 
21-14 
50-7 
+0-3 
+20-81 
34-68 
Na 5893 
_ 
— 
— 
— 
— 
24-93 
41-55 
Ha; 5790 
+6-28 
62-8 
21-06 
63-3 
-0-5 
25-72 
42-87 
Hg 5769 
6-38 
63-8 
21-23 
63-8 
± 
25-87 
43-12 
Hg 5461 
7-22 
72-2 
21-53 
71-7 
+0-5 
28-70 
47-83 
Cd 5086 
8-38 
83-8 
21-68 
83-4 
+0-4 
32-60 
54-33 
Cd 4800 
9-55 
95-5 
22-00 
94-4 
r 1 " 1 
36-21 
60-35 
Cd 4678 
9-90 
99-0 
21-66 
99-8 
-0-8 
37-81 
63-02 
Fe 4378 
11-75 
117-5 
22-10 
115-3 
+2-2 
— 
— 
Hg 4358 
11-49 
114-9 
21-82 
116-5 
-1-6 
42-37 
70-62 
Fe 4259 
12-25 
122-5 
22-22 
122-5 
± 
— 
— 
