ÖFVERSIGT AF K. VETENSK.-AKAD. FÖRHANDLINGAR 1899, N:0 9. 925 



Temp. = 49.95° C. 



t 



X 



k 



3 



4.93 



— 



43 



17.12 



0.006497 



55 



19.64 



6547 



67 



21.60 



6491 



79 



23.38 



6539 



CO 



32.00 



^— 



In order to get the correct result for the mean value of k, it is 

 best to proceed as follows. The first titration (= value of .^) is 

 combined with the remaining ones and the value of k calculated 

 as above. Then the second titration is combined with the 

 suceeding ones, thus giving another series of values for k. The 

 third titration is then used as the starting point, and so onl 

 The importance which must be attached to each value of k is 

 found by taking the difference of the values of x used. 

 Thus, in the above case we have the following table. 



6497, 6547, 6491, 6539 

 1219, 1471, 1664, 1845 



6715, 6482, 6586 6249, 6521 6793 

 252, 448, 626 196. 374 178. 



The numbers on the first line are the values of k multiplied by 

 lO''. The numbers on the second line give the relative impor- 

 tance of the values of k above them. On calulating the mean 

 value, we then obtain 



k = 0.006524 . 



Other experiments at the same temperature gave the following 



values of k. 



Mean k{2) = 0.006563 . 



The final result from the two experiments is thus 



k — 0.006544 . 



In what follows the mean values of k obtained in each experi- 

 ment (k{l) . . k(2) . . k(S) . . etc.) have all been calculated according 

 to the preceeding method. The figures are not given in full, 

 however, as that is unnecessary. The average value of k obtain- 

 ed from the separate experiments is then put down as /c = 



