в Ҳӻ
: .
: Na2S23, Hl, l2, AgNO3.
1 ij
Na2S23 (5-6 ) ᒺ Hl. .
Na2S23 + HCl → H2S23 + NaCl
?
________________
.
______________________
2 ij
.
Na2S23 .
ϳ , , .
Hl; :
l2 + Na2S23 + H2O = NaCl + H2S4 + HCl
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_________________________________________________________________
:
) l- (䳺 AgNO3);
) SO42- (䳺 Ba(NO3)2).
г .
HCl + AgNO3 →__________________________________________
_________________________________________________________________
_________________________________________________________________
H2SO4 + Ba(NO3)2 →_______________________________________
______________________________________________________________________
3 - (S2O32-)
2. :
Na2S2O3 + 2 → Na2S4O6 + NaI
, .
_________________
.
1 , ?
2 䳿 ?
3 ?
4 .
5 ϳ :
Cl2 + Na2S2O3 + H2O → HCl + S + Na2SO4
7
: Ͳί ,
Ͳ Ͳ
: .
: , HNO3, , , , S, Bal2, Zn, NaOH, HCl, (NH4)2Cr2O7
1
.
. , , . .
HNO3 → ___________________________________________
|
|
|
________________________
ͳ ; , O2 NO2. , .
2
. 5 HNO3., 5 HNO3 . . :
Cu + HNO3() → ___________________________________________
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Cu + HNO3() → _________________________________________
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, HNO3 : 䳿 HNO3 . (IV) (NO2), () (NO).
3 HNO3
.
HNO3, . ϳ , . :
S + HNO3 → ___________________________________
______________________________________________________________________
HNO3 () , - (IV)
. :
SO42-+ Ba2+→ ________________________________________
.
4 ³
HNO3. , , . ( ). . () .
, , :
Zn + HNO3() → _____________________________________
________
䳿 HNO3 , .
