TEMPEKATURE OF THE RATE OF A CHEMICAL CHANGE. 
195 
The relation hx = h'x' is thus independent of the form of the fim(dion f {y), and 
the method of observation is alike applicable to imimolecular and multimolecular 
reactions. When this method is used the relation h'Jh = (T'/T)*” becomes 
xjx' = (T'/T)-. 
The following table exhibits the agreement of tlie times calculated from the above 
relation, the value of m being 28'5 :— 
/. 
T. 
X. 
Found. 
Calculated. 
1 
9 
282 
47-2 
47-2 
12 
285 
34-9 
34-9 
15 
288 
25-9 
25-9 
18 
291 
19-1 
19-3 
21 
294 
14-6 
14-4 
24 
297 
10-8 
10-8 
27 
300 
8-0 
8-1 
30 
303 
6-1 
6-1 
The experimental and calculated numbers agree as well as those recorded in the 
Bakerian Lecture, and show that the method of experiment gives very accurate 
results. 
If the rate of the reaction at zero centigrade is taken to be unity, the following are 
the rates at the temperatures of the experiments :— 
t. 
Jc. 
t. 
k. 
0 
1 
21 
8-17 
9 
2-51 
24 
10-96 
12 
3-37 
27 
14-59 
15 
4-56 
30 
19-28 
18 
6-12 
At temperatures increasing by 10° the rates are 
t. 
k. 
t. 
k. 
0 
1 
20 
7-46 
10 
2-78 
30 
19-28 
The rate at zero centigrade is doubled at 6°7. 
2 c 2 
