V(HCL) = 200mL
desitatea=1.05g/mL
c=10%
md=?
ms=?
m(H2O)=?
Vs=?
desitatea= m(H2O)/( : ) V
m(H2O) = desitate × V = 1.05 ×200 = 210
C= md/ms × 100
ms= md+m(H2O)
=> C= md/md+m(H2O) ×100
10= 100md/md+m(H2O)
100md = 10(md+210)
100md = 10md + 2100
90md = 2100
md= 23,33g
C=md/ms × 100 => ms= md/c × 100 => ms= 23,33/( : )10 ×100 => ms 233,3g
Vs= m/desitate = 233,3/1,05 =222,19 mL