927 
TABEL III. 
Mutarotatie van tetramethylglucose. 
t in 
min. 
0.5 mol. 
tetramethylglucose 
in water 
K + K, = 
1 log ra " r - 
t in 
min. 
0.5 mol. 
tetramethylglucose 
0.5 mol. H 3 BO 3 
K +K, — 
ilog r ^ 
Aflezing 
Spec. Rot. 
t “ r t — r* 
Aflezing 
Spec. Rot. 
t ë r t -r. 
0 
12.40 
105.05 
0 
12.42 
105.25 
— 
1 
12.32 
104.41 
0.01116 
1 
12.35 
104.62 
0.01094 
2 
12.27 
103.98 
0.00941 
3 
12.21 
103.47 
0.01053 
5 
12.08 
102.11 
0.01076 
5 
12.06 
102.20 
0.01114 
6 
11.99 
101.61 
0.01061 
10 
11.71 
99.24 
0.01176 
10 
11.69 
99.06 
0.01177 
15 
11.36 
96.27 
0.01272 
15 
11.54 
97.79 
0.00982 
20 
11.15 
94.49 
0.01200 
20 
11.32 
95.92 
0.00976 
25 
11.05 
93.64 
0.01064 
25 
11.11 
94.15 
0.00983 
30 
10.90 
92.37 
0.01027 
30 
10.85 
91.95 
0.01060 
35 
10.67 
90.42 
0.01091 
35 
10.65 
90.25 
0.01094 
40 
10.59 
89.74 
0.01029 
40 
10.56 
89.49 
0.01041 
50 
10.32 
87.45 
0.01053 
45 
10.40 
88 13 
0.01071 
60 
10.21 
86.52 
0.00973 
50 
10.28 
87.11 
0.01078 
00 
9.43 
79.91 
— 
55 
10.19 
86.35 
0.01067 
Gemiddeld 0.01095 
60 
10.17 
86.19 
0.00996 
00 
9.42 
79.82 
— 
Gemiddeld 0.01048 
Metingen, alle bij 25° en steeds werd begonnen met de metingen 4 minuten, 
nadat de vloeistof aan de stof was toegevoegd. 
K H3 b 0;) = 27.5X10-6 
60 * 
