nFe=0,2(mol)
a) PTHH: Fe2O3 + 3 H2 -to-> 2 Fe + 3 H2O
0,1_____________0,3____0,2(mol)
b) mFe2O3=160.0,1=16(g)
c) V(H2,đktc)=0,3.22,4=6,72(l)
nFe = 11.2/56 = 0.2 (mol)
FeO + H2 -to-> Fe + H2O
0.2.....0.2...........0.2
mFeO = 0.2*72 = 14.4 (g)
VH2 = 0.2*22.4 = 4.48 (l)