Fe2(SO4)3+6NaOH = 2Fe(OH)3(осадок) +3Na2SO4 n(Fe(OH)3)=64.2/107=0.6 n(Fe2(SO4)3)=0.6/2=0.3 m(Fe2(SO4)3)=0.3*400=120 m(Na2SO4)=200-120=80 w(Na2SO4)=80/200=0.4=40%
Fe2(SO4)3+6NaOH = 2Fe(OH)3(осадок) +3Na2SO4
n(Fe(OH)3)=64.2/107=0.6
n(Fe2(SO4)3)=0.6/2=0.3
m(Fe2(SO4)3)=0.3*400=120
m(Na2SO4)=200-120=80
w(Na2SO4)=80/200=0.4=40%