AT THE MOMENT OF CHEMICAL CHANGE. 
789 
Table III. — C. 
Oxygen in the 
Oxygen equivalent 
peroxide of 
barium Q = a. 
to the chloride 
of silver 
reduced == 
Ratio, a : 
Calculated ratio. 
1. 
29-13 
7:2 
28-57 
2. 
3. 
32- 05 
33- 10 
3:1 
33-33 
4. 
100 
42-07 
7:3 
42-85 
5. 
6. 
44-52 
44-28 
9:4 
44-44 
7. 
50-23 
8. 
50-11 
2: 1 
50-0 
9. 
49-88 
The point to be observed in these experiments is the great increase of reduction at 
the lower temperature. The comparative experiments in this and the last series, 
show that from corresponding quantities of the chloride, as nearly as possible twice 
the amount of silver is reduced ; and these experiments, it is worthy of remark, take 
up the action exactly at the point where the other series terminates, so that the ex- 
pression of the relative loss forms a continuation of the series of ratios eommeneing 
with 7 ■ 2 and terminating with 2:1. 
The following are a few experiments made with the peroxide P, containing 8'34 
per cent, of oxygen. 
Table IV.— A. 
Peroxide of 
Clloride of silver 
Chloride of silver 
Equivalent of 
barium Q. 
taken. 
obtained. 
oxygen. 
1. 
3-020 grins. 
1-012 grins. 
0-5715 grms. 
0-03175 grms. 
2. 
3-032 
2-009 
0-765 
0-0426 
3. 
3-0256 
3-895 
1-484 
0-08244 
4. 
3-0005 
8-879 
1-733 
0-0962 
5. 
3-0046 
6-11 
1-9495 
0-1083 
6. 
3-05 
11-983 
2-065 
0-1147 
Table IV.- 
-B. 
Oxygen in the 
Oxygen equivalent 
peroxide of 
to the choride of 
Ratio, a : 
Calculated ratio. 
barium P = a. 
silver reduced =i/'. 
1. 
1-04 
8:1 
1-04 
2. 
1-40 
6:1 
1-39 
3. 
8-34 
2-72 
3:1 
2-78 
4. 
3-26 
5:2 
3-33 
5. 
6. 
3-60 
3-72 
9:4 
3-70 
