ON THE SPECIFIC HEAT OF AQUEOUS SOLUTIONS. 
Table X.—Specific Heats of NaCl Solutions at 20° C. 
135 
No. of solution. 
h. 
*20) 
observed. 
Mean 
values. 
X20- 
A*20) 
calculated. 
*20) 
calculated. 
Difference 
from mean 
value. 
I. 
9-7347 
3 • 294 
3-294 
3-294 
37 -55 
0-881 
3-294 
+ 
II. 
L3-883 
3-437 
3 • 438 
3 • 438 
38-33 
0-735 
3 • 440 
+ 2 
III. 
20-758 
3 • 605 
3-609 
3-607 
39-17 
0*575 
3-600 
-7 
IV. 
29-189 
3-728 
3-721 
3-725 
39-74 
0-449 
3-726 
+ 1 
V. 
54-442 
3-903 
3-896 
3-900 
40-44 
0-268 
3-907 
i *1 
4- 7 
VI. 
109•94 
4-036 
4-035 
4 • 035 
41-11 
0-145 
4-030 
VII. 
Water 
220-91 
GC 
4-099 
4-097 
4-175 
4-098 
41-51 
0-076 
4 • 099 
+ 1 
inclined at a small angle and meeting at about P = 10. The divergence from the 
straight line appeared to be outside the limits of experimental error, and the values 
taken as final are within +0'002 of the mean observed values. 
Table XI.—Final Values of Mean Specific Heats of KC1 Solutions for Intervals 
of 13° C. and Mean Temperatures of 7° C., 20° C., and 33° C. 
No. of solution. 
h. 
7° C. 
20° C. 
33° C. 
*20 ~ *7- 
*33 — *20- 
’ I. 
16-362 
3 • 206 
3 • 225 
3-244 
0-019 
0-019 
II. 
23-785 
3 • 435 
3-451 
3-469 
0-016 
0-018 
III. 
35•296 
3 • 627 
3-638 
3-654 
0-011 
0-016 
IV. 
53•743 
3 • 792 
3-797 
3-810 
0-005 
0-013 
V. 
108-72 
3-979 
3-974 
3-981 
-0-005 
0-007 
VI. 
218-30 
4-082 
4-070 
4-075 
-0-012 
0-005 
Water 
oc 
4-193 
4-175 
4-175 
-0-018 
o-ooo 
Table XII.—-Final Values of Mean Specific Heats of NaCl Solutions for Intervals 
of 13° C. and Mean Temperatures of 7° C., 20° C., and 33° C. 
No. of solution. 
h. 
7° C. 20° C. 
33° C. 
*20 — *7- 
*33 _ *20- 
I. 
9-7347 
3-292 3-294 
3-296 
0-002 
0-002 
II. 
13-883 
3•430 3•440 
3 • 449 
o-oio 
0-009 
III. 
20-758 
3 -585 3 • 600 
3-614 
0-015 
0-014 
IV. 
29-189 
3-710 3-726 
3-738 
0-016 
0-012 
V. 
54•442 
3-892 3-907 
3-918 
0-015 
o-oii 
VI. 
109-94 
4-025 4-030 
4-036 
0-005 
0-006 
VII. 
220-91 
4-104 j 4-099 
4-101 
-0-005 
0-002 
Water 
4-193 4-175 
4-175 
-0-018 
0-000 
VOL. CCXVIII.-A. 
T 
