, , . . , , : ) , ) (VI) .
) l 20. , :
Zn + 20 ( )
Zn + 21 = ZnCl2 + 2,
, , ZnCl2 ;
) 20 H2S04. (VI) , :
S03 + 20 = H2S04
SO3 + H2S04 (_) ( )
, (VI) .
. : , , :
:
A12S3 + 6 = 2Al(OH)3 ↓ + 3H2S ↑;
(V) :
15 + 420 = 304 + 51.
( ), , :
(II) : CuCl2 +
+ 2NaOH = Cu(OH)2 ↓ + 2NaCl.
. , , , ( ): 4FeS2 + 11O2 = 2Fe203 + 8SO2 ↑.
: 03 = + 02 ↑.
, , , :
H2SO4 | |
HCl | |
HNO3 | |
NaCl | , , |
NaCl*KCl | |
Na2SO4*10H2O | |
NaNO3 | , |
NaOH | , , |
Na2CO3*10H2O | |
Na2CO3 | () |
NaHCO3 | () |
Na2SiO3 | |
K2CO3 | |
KCl | , |
KClO3 | |
KNO3 | , |
K3[Fe(CN)6] | |
K4[Fe(CN)6] | |
KFe3+[Fe2+(CN)6] | |
KFe2+[Fe3+(CN)6] | () |
NH4Cl | |
NH3*H2O | , |
(NH4)2Fe(SO4)2 | |
O | () |
(OH)2 | , , , |
SO4*0,5H2O | |
aSO4*2H2O | |
CaCO3 | , , , |
aO3×MgCO3 | |
O4×2H2O | |
(2O4)2 | |
(2O4)2+2SO4 | |
CaOCl2(Ca(OCl)2 + CaCl2) | |
MgO | |
MgSO4*7H2O | () |
MgSO4 | |
Al2O3 | , , , , , |
C | , , , , |
AgNO3 | , |
(Cu) 2O3 | |
Cu2S | , |
CuSO4*5H2O | |
FeSO4*7H2O | |
FeCuS2 | , |
FeS2 | , , |
Fe3 | |
Fe23 | , |
Fe34 | , |
Fe ×nH2 | , |
H2SO4 × nSO3 | SO3 H2SO4 |
4 | , |
N2O | |
NO2 | , |
SO3 | , |
SO2 | , |
CO | |
CO2 | , , |
SiO2 | , , |
CO + H2 | , - |
Pb(CH3COO)2 | |
PbS | , |
ZnS | , |
HgCl2 | |
HgS | |
MnO2 |
|
|
.
, , . . ; . .
, , . ( ) . , AgN03, AgCl; -, , l- ( 1).
. .... , , . , Fe(OH)3 , , Fe3+ ( 2). () , ( 3).
... . 203. , , ( 4).
|
|
1) 3AgN03 + FeCl3 = 3AgCli + Fe(N03)3
2) Fe(N03)3 + 3KOH = 3KN03 + Fe(OH)3↓
3) 2Fe(OH)3 = Fe203 + 3H20
4) Fe203 + K2C03 = 2KFe02 + C02T.