NO2ˉ + + = NO2
-
2MnO 4ˉ + 5 NO2ˉ + 6 + = 5 NO3ˉ + 2Mn 2 + + 3H2O
MnO 4
NO2ˉ + NH4 + = N 2 ↑ + 3H2O
, - -.
-
3 ˉ+ + = 3
, .
3 ˉ+ + = 3
3 + 2 5 = 3 2 5 + 3H2O
, .
(III)
93 ˉ+ 3 Fe 3+ + 2H2O = [Fe 3 (O) 2 (3 ) 6 ] 3 ↓ + 23
:
1. :
SO2ˉ3 + 2 + = H2 SO3 = SO2 ↑ + H2O
S 2 ˉ + 2 + = 2 S↑
SO2 ↑ + 2 S↑ = 3 S ↓ + 2H2O
. . , .
2. SO2ˉ3 S2 O2ˉ3 , S2 O2ˉ3 - .
3. S2 O2ˉ3 S 2 ˉ SO2ˉ3 SO2ˉ4 , BaSO 4
. - - , .. . .
S2ˉ , S2O2ˉ3, SO2ˉ4, SO2ˉ3
1. S2ˉ - Na2[Fe(CN)5NO] :
S2ˉ Na2[Fe(CN)5NO] Na2[Fe(CN)5NOS]4ˉ
-
S2ˉ -
2. S2ˉ CdCO3:
S2ˉ CdCO3 CdS↓
CdS .
3. S2O2ˉ3 , SO2ˉ3 , SO2ˉ4 2:
SO2ˉ3 Sr(NO3)2 SrSO3↓
SO2ˉ4 Sr(NO3)2 SrSO4↓
SrSO3 SrSO4
4. SO2ˉ3 SO2ˉ4
|
|
|
2 /3 HCl 3:
SrSO3↓ HCl SO2↑
SO2ˉ3 :
SO2↑ I2 SO2ˉ4
HCl
. 3 SO2ˉ4 .
5. S2O2ˉ3 HCl 3:
S2O2ˉ3 HCl S↓
S2 O2ˉ3 + I2 = S4 O2ˉ6 + 2I ˉ
-
Clˉ , Brˉ , Iˉ
1. Clˉ , Brˉ , Iˉ - AgNO3:
Clˉ AgNO3 AgCl↓
HNO3
Brˉ AgNO3 AgBr↓
HNO3
Iˉ AgNO3 AgI↓
HNO3
. .
2. Clˉ 1 12% (NH4)2CO3:
AgCl↓ (NH4)2CO3,12% [Ag(NH3)2]+ + Clˉ
AgBr, AgI
3. Cl ˉ HNO3 2:
[Ag(NH3)2]+ Clˉ HNO3 AgCl↓
4. I ˉ Br ˉ :
I ˉ Cl2 aq I2
-
Brˉ Cl2 aq Br2
-
