, , .
, .
___________________________________________________________________________
,
2 (V)
, SO2, , , , . .
, SO2 H2SO3:
____________
H2SO3 SO2?
___________________________________________________________________________
SO2, H2SO3.
________________
3 - (V)
SO2 : ) H2S; ) KMnO4
SO2↑ H2S , .
- , :
H2S + SO2 →_____________________________________________
________
:
, , :
SO2 + KMnO4 + H2O → ___________________________________
_______________________________________________________________________
1 (V), , .
2 :
2.1 SO2 ;
2.2 SO2 ;
2.3 2SO3.
3 , SO2 . ? 䳿 .
4 䳿 2SO3 NaOH ?
5 , .
5
: ί
Ҳ»
: .
: , , , , , , , Zn(), Cu(), Ba(NO3)2, Hl.
1 .
½ ᒺ . 3 H2SO4(.), .
|
|
|
.
_________________
H2SO4.
___________________________________________________________________________
, () , ?
___________________________________________________________________________
2 H2SO4
, H2SO4 (), . ( ). , , , . .
_________________
3 H2SO4.
) Zn() H2SO4 () H2SO4();
) H2SO4 .
:
) Zn + H2SO4() → _______________________________________
_______________________________________________________________________
Zn + H2SO4() → ________________________________________
____
_________________________________________________________________
) Cu + H2SO4 → ________________________________________
_______________________________________________________________________
Cu + H2SO4 → _________________________________________
______________________________________________________________________
, ?
H2SO4 H2SO4?
_________________
H2SO4 ?
S2- ↔S+6 S0
S+4
䳿 H2SO4 Zn . S2, ( S↓) H2S↑. - :
Zn + H2SO4 → S2 + ___________________________________________
______________________________________________________________________
Zn + H2SO4 → S↓ + ____________________________________________
______________________________________________________________________
Zn + H2SO4 → H2S↑ + ________________________________________
__________________________________
4 SO42-
H2SO4 ( ) Na2SO3 Ba(NO3)2. .
Hl. Hl. . ³ :
H2SO4 + Ba(NO3)2 → ______________________________________
_________________________________________________________________
|
|
|
_________________________________________________________________
Na2SO4 + Ba(NO3)2 → ______________________________________
_________________________________________________________________
_________________________________________________________________
Na2SO4 + Ba(NO3)2 → _____________________________________
_________________________________________________________________
_________________________________________________________________
BaSO4 + Hl → __________________________________________
_________________________________________________________________
_________________________________________________________________
BaSO4 + Hl → __________________________________________
_________________________________________________________________
_____
1 H2SO4.
2 .
3 .
4 ?
5 ?
6 , .
7 Ba2+ + SO42- = BaSO4↓ .
8 , :
H2SO4 + →
H2SO4 + Fe(OH)3 →
H2SO4() + Ag →
H2SO4() + Fe →
H2SO4() + C → CO2 + SO2 + H2O
H2SO4() + HI → I2 + H2S + H2O
9 :
S
↑
H2S → S → SO2 → SO3 → H2SO4 →H2S
↓
SO2
6
