IN GASES: HYDROGEN, CARBONIC OXIDE, AND OXYGEN. 
6G3 
Table XXX.—Pressure = 1000 millims. 
Reference 
No. 
Before the explosion. 
After the 
explosion. 
Oxygen. 
Carbonic 
oxide. 
Hydrogen. 
Carbonic 
oxide. 
Carbonic 
acid. 
Hydrogen. 
Steam. 
Temperature 
Coefficient 
a. 
90 
16-8 
70-8 
29'2 
55-3 
15-5 
11-3 
18-0 
° C. 
3 
5v 
91 
55 
54-9 
1V9 
11-7 
17-6 
19 
5-2 
92 
55 
55 
54-8 
16 1 
118 
17-3 
20 
5 0 
93 
55 
55 
55 
53-9 
16-9 
12 1 
17-1 
40 
4'5 
94 
55 
55 
55 
53 1 
17 7 
12-8 
16'3 
60 
3-8 
These experiments show that a small change of initial temperature makes a very 
considerable difference in the division of the oxygen. To carry the range of temperature 
further, portions of a similar mixture were exploded under 1000 millims. pressure at 
temperatures ranging from — 10° to 120° C. 
Table XXXI. 
Reference 
No. 
Before the explosion. 
After the explosion. 
Temperature. 
a. 
Oxygen. 
Carbonic 
oxide. 
Hydrogen. 
Carbonic 
oxide. 
Carbonic 
acid. 
Hydrogen. 
Steam. 
95 
17-5 
733 
267 
56-3 
170 
8-6 
18-1 
° C. 
-10 
7-0 
96 
54-0 
19 3 
11 2 
15-5 
60 
3-9 
97 
55 
53-6 
197 
11-4 
15-3 
80 
3-7 
98 
• 5 
15 
537 
19-6 
11-4 
15-2 
100 
3-7 
99 
17-6 
73'4 
26-6 
53'6 
19-9 
11-3 
15-3 
120 
3-7 
In the last two experiments the eudiometer was heated by hot glycerin in the jacket. 
These additional experiments confirm the previous series ; a change of initial tem¬ 
perature greatly influences the division of the oxygen. But they also bring to light a 
very important fact. The coefficient of affinity does not materially alter when the 
temperature is raised from 60° to 120°. The coefficient found at these two tem¬ 
peratures in the second series is also the same as that found at 60° in the first series. 
The two sets together show a progressive diminution of-the coefficient as the tem¬ 
perature is raised from —10° to 60° and a nearly constant value between 60° and 120°. 
Another mixture w r as now made containing about three times as much hydrogen as 
carbonic oxide ; portions of this mixture were exploded successively under 1000 millims. 
pressure at 0°, 70°, 80° and 100°. A nearly similar mixture was exploded at 125°. 
