\(n_{Fe_3O_4}=\dfrac{23.2}{232}=0.1\left(mol\right)\)
\(PTHH:Fe_3O_4+4H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+FeSO_4+4H_2O\)
\(...........0.1....................0.1.......0.1.........0.1\)
\(m_{FeSO_4}=0.1\cdot152=15.2\left(g\right)\)
\(m_{Fe_2\left(SO_4\right)_3}=0.1\cdot400=40\left(g\right)\)
\(m_{H_2O}=0.1\cdot18=1.8\left(g\right)\)
a)
$Fe_3O_4 + 4H_2SO_4 \to FeSO_4 + Fe_2(SO_4)_3 + 4H_2O$
b)
Theo PTHH :
$n_{FeSO_4} = n_{Fe_2(SO_4)_3} = n_{Fe_3O_4} = \dfrac{23,2}{232} = 0,1(mol)$
$m_{FeSO_4} = 0,1.152 = 15,2(gam)$
c)
$m_{Fe_2(SO_4)_3} = 0,1.400 = 40(gam)$
d)
$n_{H_2O} = 4n_{Fe_3O_4} = 0,4(mol)$
$m_{H_2O} = 0,4.18 = 7,2(gam)$