928 



PRICE, ON ESTER-SAPONIFICATION. 



Temp. 



Uncorr. k. 



Co7'r. k. 



49.95' 



0.006530 



0.006608 



40° 



0.002795 



0.002817 



27.95^ 



0.0009205 



0.0009232 



Propyl Acetate. 



This ester is only slightly soluble in water, so that Solutions 

 of the strength used for Methyl and Ethyl Acetate could not be 

 niade. Tlie ester is also more soluble in cold than in hot water. 

 A stock Solution which was almost saturated at 50% was tbere- 

 fore raade and used. It was not necessary to know the con- 

 centration in order to make the constants comparable, as explained 

 before. (Vide also Löwenherz, whose solutions of the different 

 esters were of variable strength). 



49.95^ 



A0\ 



t 



X 



k 





7 



1.1b 



— 





50 



17.50 



0.006488 



Mean k. 



60 



19.00 



6487 



(1) 0.006458 



70 



20.25 



6450 



(2) 0.006497 



80 



21.38 



6464 



(3) 0.006525 



CO 



28.32 



— 







.■ .k^ 



= 0.006493 







Corr. k = 



= 0.006571 . 





7 



2.31 









67 



8.93 



0.002775 





87 



10.64 



2779 





107 



12.17 



2793 





127 



13.50 



2797 





CO 



23.10 



— 







.■ . k-- 



= 0.002800 







Corr. k 



= 0.002822 . 





