Răspuns:
TREBUIA sa se dea solubilitatea sarii, care este s=36, deci
-este solutie saturata
c= mdx100/ms
md=12g
ms= md+m,apa22g
c= 12x100/22= 45%
md=50g
v,apa= 4000cm³
m,apa =1g/cm³ x 4000cm³=4000g
ms1= md+m,apa= 2050g
c1= mdx100/ms1= 50x100/4050= 1,234%
c2= md2x100/ms2 unde md2=md1
ms2= 50x100/0,617g= 8104g
m,apa adaugata =ms2-ms1=8104-4050=> 4054g
v,apa= 4054cm³
Explicație:
