CH4
+
____________________
O2
-
-
-
-
-
-
CO2
+
____________________
H2O
Fe2O3
+
____________________
H2O
-
-
-
-
-
____________________
Fe
(
OH
)
3
____________________
Fe
+
____________________
H2SO4
-
-
-
-
-
-
Fe2
(
SO4
)
3
+
____________________
H2
____________________
KClO3
?
____________________
KCl
+
____________________
O2
Al2O3
+
____________________
H2O
-
-
-
-
____________________
Al
(
OH
)
3
____________________
Fe
+
____________________
Cl2
-
-
-
-
-
-
-
____________________
Fe2Cl3
____________________
NaOH
+
CuCl2
-
-
-
-
____________________
NaCl
+
Cu
(
OH
)
2
