i3+ .
)
i2S, .
)
.
4 - 5 1 - 2 . , , .
)
. .
)
.
2 - 3 3 - 5 . ( , ). , .
:
BiCl3 + H2O = BiOHCl2 + HCl
BiOHCl2 + H2O = Bi(OH)2Cl + HCl
Bi(OH)2Cl = BiOCl + H2O
, iO+, .. .
, iONO3. , , .
, ,
BiOCl + 2HCl = BiCl3 + H2O
.
)
Na2SnO2 2SnO2 , . , .
4 - 5 (II) 2
SnCl2 + 2NaOH = Sn(OH)2 + 2NaCl
, ,
Sn(OH)2 + 2NaOH = Na2SnO2 + 2H2O
3-4 , i(NO3)3.
i(NO3)3 + 3NaOH = Bi(OH)3 + 3NaNO3
2Bi(OH)3 + 3Na2SnO2 = 2Bi + 3Na2SnO3+ 3H2O
, , .
|
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.
, , , :
2Na2SnO2 + H2O = Na2SnO3 + Sn + 2NaOH
, , (II).
)
(N2)2S , [i((N2)2S)3]3+. , .
4. Hg2+
)
(II) -
, IV , . IV . , . ( 1 3 ), , , , ,
3HgS + 2HNO3 + 12HCl = 3H2[g14] + 3S + 2NO + 4H2O
, g2+ [gI4]2.
HgS + 2HCl + 4KI = K2[gI4] + 2KCl + H2S
. ,
HgS + Na2S = Na2HgS2
Na2HgS2 + 2HCl = HgS + 2NaCl + H2S
(II) , ,
Na2HgS2 + NH4Cl + H2O = HgS + NaHS + NaCl + NH4OH
)
g, .
4 - 5 3 - 4 .
.
)
,
g12 + 2NH4 = [gN2]1 + N41 + 22
.
4 - 5 2 .
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)
(II) - - , ,
g2+ + 2I = gI2
gI2 + 2I = [gI4]2
4 - 5 1 - 2 , . , - .
- , - NH4+ + 2[gI4]2 + 4OH = [g2ONH2]I + 7I + 2
, , ( I, 4 ). (II).
)
1. (II) g2l2, , .
2g12 + SnCl2 = g2Cl2 + Sn14
g2Cl2 + Sn12 = 2Hg + SnCl4
2. ,
g2+ + u = g + u2+
, .
. 4.1.
