926 



PRICE, ON ESTER-SAPONIFICATION. 



40' C. 



27.95' 



t 



X 



k 





3 



4.20 



— 





53 



11.81 



0.002737 



Mean k. 



68 



13.63 



2725 



(1) 0.002757 



83 



15.31 



2725 



(2) 0.002729 



98 



16.99 



2769 



(3) 0.002786 



CO 



32.35 



__ 







.■ .h^ 



: 0.002757 . 





3 



19.45 









162 



22.00 



0.0009124 



Mean k. 



192 



22.39 



9113 



(1) 0.0009166 



222 



22.77 



9153 



(2) 0.0009231 



252 



23.12 



9163 



(3) 0.0009078 



oo 



28.43 



— 





. • . k = 0.0009158 . 



0.05\ 8 3.21 — 



2745 9.94 0.00004907 



4020 12.45 0.00004917 



CO 28.51 — 



1333 10.22 — 



2780 13.60 0.00004864 



4249 16.50 4851 



CO 32.81 — 



,• ,k = 0.00004890 . 



The above values of k cannot be rightly compared with each 

 other, as a correction inust be made for the difFeience in normal- 

 ity of the acid at the difFerent teinperatures. The acid was 

 standardised at the ordinary room teraperature and therefore tbe 

 constants at 40' and 50° are not as high as they should be, 

 since the reaction mixture was always mixed by volume. The 

 assuraption that has been made for the correction is, that the 



co-efficient of expansion of the acid jstrength =— j is the same 



as that of water; and the constants raust then be proportionately 

 increased as the volume of the hydrochloric acid increases. This 



