Kolicinski udio sumporne kiseline u rastvoru iznosi 0,040, a gustina rastvora 1,19 g/cm3. Izracunati koncentraciju i maseni udio sumporne kiseline u tom rastvoru.
"A new scientific truth does not triumph by convincing opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it"Max Planck
n(H2O)=xn(H2SO4)=y y/(x+y)=0.
n(H2O)=x
n(H2SO4)=y
y/(x+y)=0.040 ---->x/y=24
x=24y
c=y/V
gustina-d
V=(98y+18x)/d=530y/d
c= y*d/530y=d/530=(1190 g/dm3)/(530 g/mol)=2.245 mol/dm3
w=m(H2SO4)/(m(H2SO4)+m(H2O))=98y/(98y+18x)=98y/530y=18.94%
Pozdrav! :)
"A new scientific truth does not triumph by convincing opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it" Max Planck