(III) s2 s33. s3+ , .
(V) sO43. .
)
1. (III). s2S3
2Na3s + 32S + 61 = s2S + 6Na1 + 62,
s2S3 + 3Na2S = 2Na3sS3
(III) ,
s2S3 + 6Na = Na3s + Na3sS3 + 32
4.1
| Hg2+ | Cu2+ | Cd2+ | Bi2+ | |
| H2S 0,3 HCl | HgS, HNO3 | CuS | CdS | Bi2S3 |
| HCl | BiOCl, HCl | |||
| NaOH, KOH | HgO | Cu(OH)2* | Cd(OH)2** | Bi(OH)3** |
| NH4OH () | [gNH2]Cl | [Cu(NH3)4]2+ | [Cd(NH3)4]2+ | |
| SnCl2 + HCl | , | |||
| Na2SnO2 + NaOH | HgO | Cu(OH)2 | Cd(OH)2 |
* .
** .
, s2S3
s2S3 + 3(N4)2 = (NH4)3s + (N4)3sO3 + 32
s2S3 . .
,
s2S3 + 28NO3 = 23s4 + 32S4 + 28N2 + 82
(III)
s2S3 + 1422 + 6(N4)2 = 2(N4)sS4 + 3(N4)2S4 + 142 + 62
, .
2Na3AsS3 + 61 = s2S3 + 6Na1 + 32S
2 (V). s2S5
2Na3s4 + 52S + 61 = s2S5 + 6Na1 + 8H2O
|
|
|
s2S5
s2S5 + 3Na2S = 2Na3AsS4
, (V) , ,
4s2S5 + 12(N4)23 = 5(N4)3AsS4 + 4(N4)3sO4 + 122
4s2S5 + 24N = 5N3sS4 + 3Na3AsO4 + 122
s2S5 + 40N3 = 2H3s4 + 52S4 + 40N2 + 122
s2S5 s2S3, .
-
)
AgNO3 , . [Ag(NH3)2]
AsO33 + 3Ag+ = Ag3AsO3
Ag3AsO3 + 6N3 = 3[Ag(N3)2] + AsO33
4 - 5 3 - 4 . Ag3AsO3 Ag3AsO4.
)
I2
Na3AsO3 + I2 + 2 = Na3AsO4 + 2I
I, .
, , H+
I + NH3 = NaI + 2 + 2
2 - 3 1 - 2 . .
-
)
AsO43 ,
Na3AsO4 + 3AgNO3 = Ag3AsO4 + 3NaNO3
4 - 5 3 - 4 .
)
Na3AsO4 + 2KI + 21 = Na3s3 +I2 + 2K1 + 2
. .
2 - 3 1 - 2 6 1, 3 , , .
)
( (NH4)24 NO3)
Na3AsO4 + 12(N4)24 + 24NO3 = (N4)34[s(27)6] +
+ 21N4NO3 + 3NaNO3 + 102
, .
2 - 3 10 - 15 , . .
