2 : 2S 25 0.1 /. 2 . - (.5):
2 + 2= 3+ + H-.
, , , . .
H2S.
H2S :
, [H+]2[S2- ] = 1.3. 10- 20. [H2S] = 1.3. 10- 21. 2 1 6 , [H+] H2S 1. , [H+]=[HS- ]= 10-4.
: 2 + 3/2 2 2 + 2. 2 . 2 2 2, - . , , -, - , . , SO2, , , H2SO4. : SO2() + 2H2S() =3S(.) + +22(). ( ) , -, .
H2Sn. n = 2-8 , - . , (Na2S4, Na2Te6). .
:
Na2S n () + 2HCl (p) = 2NaCl (p) +H2S n () (n = 4-6)
S nCl2 () +2H2S () =2Cl () + H2S n+2()
. , H2S . H2S2 H2O2, . H2S2 GeS SnS G(IV) Sn(IV), As2S3 Sb2S3 - As(V) Sb(V):
GeS + (NH4)2S2 (NH4)2GeS3
As2S3 + 2(NH4)2S2 = 2 NH4 AsS3 + (NH4)2S.