CH4
+
____________________
O2
-
-
>
CO2
+
____________________
H2O
____________________
SO2
+
O2
-
-
>
____________________
SO3
____________________
Na
+
____________________
H2O
-
-
>
____________________
NaOH
+
H2
____________________
Al
+
____________________
Cl2
-
-
>
____________________
AlCl
3