( 633 ) 
BAB i) BAAN. 
N./,o ethyl acetate + N./y NaOH + N./,9 mannitol. 
First series. Second series. 
t Cn kC, t Cn kC, 
2 7.20 — g 123 == 
4 5.84 0.116 4 5.84 0.119 
6 4.98 bk = 6.55 6 4.98 112 k=—6,4? 
8 4.29 aly 8 4,23 118 
10 Sale 114 10 Sial 118 
average 0.114 average 0.117 
DA B Tr Eh Oe VERE. 
N./4 ethyl acetate + N./,, NaOH + N./s, mannitol. 
First series. Second series. 
t Cn kC, t Cn kC, 
2 TRO ye 2 tule — 
4 5.79 0.121 4 5.75 0.119 
6 4.80 124 k= 6.88 6 4.80 120 k=6.74 
8 4.10 126 10 3.60 122 
10 3.62 124 
average 0,124 average 0.120 
Summary of results obtained. 
If we now take the mean of the figures obtained in the above 
tables as end-figure we get the following summary: 
TA By Ee, KEES 
Saponification-velocity of N./,, ethyl acetate +- N./,, NaOH at 25°.0 C. 
In: Wale N./ 10 N./o9 Nl Wie 
Water 6.86 
Saccharose 2 01 3.12 4.29 5.19 5.88 
Invert-sugar 0.38 0.67 La 2.08 3.38 
d-Glucose 0.79 1,37 2.32 3.69 4.79 
d-Fructose 0.59 102 1.88 3.04 4.27 
Mannitol 5.17 5.85 6.18 6.40 6.81 
Fig. 3 gives a graphic representation of the results; the abscissae 
representent the concentrations and the ordinates, the velocities !). 
') It must be observed that in fig. 1 which gives KULLGREN’s results the abscissae 
represent percentages by volume, whilst here normalities have been used for calcu- 
lation. In KuLLGREN’s case, this representation would have caused difficulties in con- 
nection with the great concentrations of several of the non-electrolytes used by him, 
in view of the scale to be used. 
