( ^^ ) 



lOVo eaiicsiijiar. lOVo caiie^ugcii- -[- 5"/o laevulose. 



1 %^+ 0,393 --y 



%/T— + 0,393^ '' 1+— 



^ t 't 



91 0.412 0.00432 85 0.207 0.00273 



191 O 72 0.00437 181 0.555 0.0027G 



251i 0.72 0.00296 



306 0.763 0.0027 



300 0.824 0.00271 

 According to our formula we liave: 



1 



X' = k = 0.G8 /• =: 0.00295 



b 



Z7UI 



107o eanesugar. 10" „ canesugar -|- lO"/, glucose. 



t y k t y U 



57 0.191 0.00293 57 0.124 0.00145 



118 0.364 0.00287 116 0.237 0.00142 



242 0.642 00288 237 0.435 0.00142 



295 0.522 0.00144 



358 0.604 0.00146 



1 

 calculated // — — /■ = 0.00149. 



b 



A further control is given by the determination of the initial 

 velocity after i^rcvious addition of glucose or lae\ulose. 

 From 



a (ill r= in — - — at 



«(1— .V) + >'«// + -7^' 



follows that the initial veh^'ity in a solution of a canesugar -f" ^' 

 glucose, or laevulose is: 



(///\ m 1 



^ 2 a 



fdy\ wj 



whereas without such addition -v ^^ ~' 



V dt J I, = a 



These are the experimental resLÜts: 



