Fe + CuSO4 -> FeSO4 + Cu (1)
mO=2,36-1,96=0,4(mol)
nO=0,025(mol)
Đặt nFe=a
nFeO=b
nFe2O3=c
64a-56a=2,48-2,36
=>a=0,015(mol)
Ta có:
\(\left\{{}\begin{matrix}56.0,015+72b+160c=2,36\\b+3c=0,025\\\end{matrix}\right.\)
=>b=0,01;c=0,005
mFe=56.0,015=0,84(g)
mFeO=72.0,01=0,72(mol)
mFe2O3=160.0,005=0,8(mol)