Đáp án:

Giải thích các bước giải:

 Câu 1

Fe2O3 +3H2--->2Fe +3H2O

Fe ko thành FeO đc

FeO+H2-->Fe+H2O

H2O+SO3--->H2SO4

H2SO4+Fe--->FeSO4+H2

Câu 2

a) ZnO+H2--->Zn +H2O

b) Fe3O4+4H2-->3Fe +4H2O

c) Fe +2HCl-->FeCl2+H2

d) Fe +H2SO4-->FeSO4+H2

e) 2Al+6HCl--->2AlCl3+3H2

f) giống e

g) Zn +2HCl-->ZnCl2+H2

h)2Cu+O2-->2CuO

i) 4Al+3O2-->2Al2O3

\(\begin{array}{l}
1)\\
F{e_2}{O_3} + 3{H_2} \to 2Fe + 3{H_2}O\\
2Fe + {O_2} \to FeO\\
FeO + {H_2} \to Fe + {H_2}O\\
S{O_3} + {H_2}O \to {H_2}S{O_4}\\
Zn + {H_2}S{O_4} \to ZnS{O_4} + {H_2}\\
2)\\
a)ZnO + {H_2} \to Zn + {H_2}O\\
b)F{e_3}{O_4} + 4{H_2} \to 3Fe + 4{H_2}O\\
c)Fe + 2HCl \to FeC{l_2} + {H_2}\\
d)Fe + {H_2}S{O_4} \to FeS{O_4} + {H_2}\\
e)2Al + 6HCl \to 2AlC{l_3} + 3{H_2}\\
f)2Al + 6HCl \to 2AlC{l_3} + 3{H_2}\\
g)Zn + 2HCl \to ZnC{l_2} + {H_2}\\
h)2Cu + {O_2} \to 2CuO\\
i)4Al + 3{O_2} \to 2A{l_2}{O_3}
\end{array}\)