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( ) C + O2 CO2
CH4 C + 2H2
CO2 C + O2
C + 2H2 CH4
1: .
:
( )Na Na+ + e-
( )Cl + e- Cl-
2Na + Cl2 2NaCl
2: . .
:
Mg Mg2+ + 2e-
O + 2e- O2-
Mg(s) + O(g) = MgO(s)
-? , , , - .
: 2Fe3+ + Sn2+ = 2Fe2+ + Sn4+
(III) (II) , , (II) (IV). ( , 8+).: ( ) , -
! () - ! . , .
, . ( ) . ( - .
1 ( .8) Na Na+ + e- Cl + e- Cl-
: , ,
, () ()., .
: KMnO4 KClO3 K2Cr2O7
,
, , , .
- .1: HCl
Zn + 2HCl = Zn2+ + H2 + 2Cl-
Zno Zn2+ ( 2 )H+ H2 ( 2 )( , 1- ( )
.2:
H2 2e- = 2H+ O2 + 4e- = 2O2-
2H2 + O2 = 2H2O