1141 



TABLE 9. 



O 5 er Soia in 100 cc ^ "^'^^ ^'' Na.HPO^ 2 aq. 

 U.5 gr. boja in lOU cc. ^ 2.32 gr. kH,P04 



50 C.C. filtrate mixed with 150 cc. water +14.4 gr. Na2HP04 2 aq. 



pH= 7.64 



minutes. 



ccNaOHiN^-cNHa^N 



50 



corrected. 



jy 



0,0227 /o^j^+0,02y| log ' 



l^y 



Mean 0.00032 

 2 X i X 0.00032 = 0.00085. 



TABLE 10. 



„ _ c • • inn S "7-28 gr. Na..HP04 2 aq. 

 0.5 gr. Soja ,n 100 cc. I 2.32 gr. khW 

 50 cc filtrate mixed with 200 cc water -f- 19.2 gr. Na.HPOj 2 aq. 



pH= 7.75 



74 



Proceedings Royal Acad. Amsterdam. Vol. XXI. 



