I.
II. ,
.
. : H2S, SO2, SO3, H2SO4.
(O 1s22s22p4, S 1s22s22p63s23p43d0; H+12S-2, S+4O-22, S+6O-23, H+12S+6O-24)
.
1) ? ? ? ? ? ( , .
, - . .
, - . .)
2) ? ( 2 3)
3) ? ( 6 , 2 ; S 6 , 3 )
4) ? ( , , , ó , )
III.
1.
, , , , , , . , . , , () .
2Mg0 + O20 = 2Mg+2O-2
( , )
.
.
4P0 + 5O20 = 2P2+5O5-2
(V)
( , )
. , . -, ? , . CH4. , .
4 + 22 = 2 + 22
, ? ( ).
, , , .
|
|
, .
2. .
. , , . , . , , .
3. .
, , , . , , , . , -2, . :
C0 + 2S0 = C+4S2-2
( , )
:
2 + S = H2S
.
, .
Zn0 + S0 = Zn+2S-2
( , )
2Al0 + 3S0 = Al2+3S3-2
( , )
Hg0 + S0 = Hg+2S-2
( , )
, , . , , , .
. , :
S0 + O20 = S+4O2-2
(IV)
( , )
( !) . , .
4. (IV)
, (IV), . , SO2 - , , , . , , .
(IV) ; , . , , .
(IV):
S + O2 = SO2
2H2S + 3O2 = 2H2O + 2SO2,
Cu + 2H2SO4() = CuSO4 + SO2 + 2H2O,
H2SO3 ( 23)
Na2SO3 + 2HCl = 2NaCl + H2O + SO2,
4FeS2 + 11O2 = 2Fe2O3 + 8SO2.
:
1)
|
|
, :
CaO + SO2 = CaSO3
2KOH + SO2 = K2SO3
2)
2S+4O2 + O2 = 2S+6O3 ( )
3)
S+4O2 + 2H2S = 3S0 + 2H2O
? ( )
(IV) :
, ,
IV.
13 . . (..).
:
Zn + S = ZnS
ZnS + H2SO4 = ZnSO4 + H2S↑
n(Zn) = n(ZnS) = n(H2S).
V(H2S) = Vm ∙ n(H2S) = Vm ∙ n(Zn) = 22,4 / ∙ 0,2 = 4,48
V.
1. . 3,4.
2. , (VI) (IV).
3. .
4. 20-23 (. 24), 24-28.