Substance 
Concentration 
Ki catalyst 
Ki blank 
Oxalic acid 
1-2X N 
0-29 
3X10-4 N 
0-56 
3 X 10-5 N 
0-90 
Benzoic acid 
1-2X10-3 
0-25 
W 
2X10-4 
0-58 
n 
5 X 10-5 
0-83 
Cacodylic acid 
•02 N 
0-75 
■01 N 
0-94 
Sodium benzoate 
I X 10-3 
0-19 
0-7 X 10-3 
0-25 
)) 
1-5X10-4 
0-70 
M 
1 X 10-5 
0-90 
Potassium oxalate 
1 X 10-3 N 
0-29 
1 X 10-4 N 
0-80 
2 X 10-5 
0-96 
Sodium salicylate 
1 X 10-3 
0-23 
W 
1-5 X 10-4 
0-73 
)f 
1 X 
095 
Sodium citrate 
1 X 10-3 
0-14 
M 
1 X 10-5 
0-85 
Sodium acetate 
3 X 10-3 
0-73 
I X 10-3 
0-85 
Sodium propionate 
3 X 10-3 
0-74 
1 X 10-3 
0 89 
Sodium butyrate 
3X10 3 
0-74 
n 
1 X 10-3 
0-85 
(n’a(Lire coëfficiënt is about 2 (bet ween 25° — 40°) and it does not 
appreciabl_y change in presence of bydroquinone (Dhak, Proc. Akad. 
Wet. Amsterdam 1919, 21, 1042), It has been found that so long 
as about one tbird of the substance is oxidised, tlie nninioleciilar 
veloeity coëfficiënt remains praclicaüy constant, bnt as the oxidation 
proceeds fui-ther, the veloeity coëfficiënt increases rapidiy, and hence 
