1.
: r3+→ r 2-; C1O -→l-;
4 3
2.
2.
n2 → 2+; r2 → 2r-; 2r3+→ r2O 2-; 1-→ 1 -;
S0 2-
7 3
2- 2- 3+
3 → SO 4;Cr2O 7 →2Cr
; 2IO -
→I2?
3. +4: 2n4; n4; 2n3; n3?
4. +1: lO4; ClO3; 1; 1?
5.
: SO 2-→SO 2-; Sn4+→ Sn2+; N -→ NH +;
3 4 3 4
|
:
→ MnO2; Ag → Ag+?
7.
n -; Cr2 2-; rO 2-; NO -?
4 7 4 3
8.
MnO -, MnO 2-, NO -, SO 2-, S2-?
4 4 2 3
9. ? HN03, H2S, NH3, HNO2, H2SO4, H2SO3, KMnO4, K2Cr2O7, PbO2.
10. ? 34, n2, 3, , HNO2, 22, 2, 2, H2S.
11. , : FeS4+n4+H2SO4→Fe2(SO4)3 + MnSO4 + K2SO4 + H2O; HgS + HNO3 + HC1 → HgCl2 + S + NO + H2O;
CrCl3 + Br2 + →2rO4 +KBr + KC1 + H2O; P + HNO3 + H2O → H3PO4 + NO;
HC1O3 + H2SO3 → H2SO4 +HC1;
FeS + HNO3 → Fe(NO3)3 + S + NO2 + H2O; Ag + H2S + O2 → Ag S + H2O
Fe(CrO2)2 + K2CO3 + O2 → Fe2O3 + 2rO4 + CO2; Na2MoO4 +HC1 +A1 → MoCl2 + A1C13 + NaCl + H2O; PbS + H2O2 → PbSO4 + H2O;
Fe2O3 + Na2CO3 + KNO3 → Na2FeO4 + CO2 + KNO2; SnCl2+K2Cr2O7+H2SO4→Sn(SO4)2+SnCl4+Cr2(SO4)3+K2SO4
+H2O;
NO2+O2 +H2O →HNO3.
, .
12. - ?
ZnO + H2SO4 = ZnSO4 +H2O;
+ H2SO4 = 2 + 2SO2 + 22;
+ S3 = BaSO4;
S + 2HNO3 = H2SO4 + 2NO;
K2Cr2O7 + H2SO4 = 2r3 + 2S4 + 2; 3PbS+8HNO3 = 3S+3Pb(NO3)2+2NO+4H2O;
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|
22rO4 + 21 = K2Cr2O7 + 2KCl + H2O.
7.
q 6
1. .
NH4CNS. - Fe3+.
SO4, 12. S4, . - . .
2. - .
1. 2 FeCl3 NH4CNS. - .
. Fe3+.
2. , FeCl3 K3[Fe(CN)6]. Fe3+?
3. .
.
2 AgNO3 2 1. AgCl. . [Ag(NH3)2]Cl. , . HNO3 ( ). ? . .
4. - .
1.
[F(N)6]4- [Fe(CN)6]3-.
23 (2) . , . [F(N)6]3- FeSO4. .
2.
[Fe(CN)6]3 [Fe(CN)6]4.
2 K3[Fe(CN)6] FeCl3. . 22 2 . .
. - .
5. .
1. 2 CuS4, 2 NaOH,
2 Na2S. u()2 , CuS. u2+. .
2. NH4OH 2 CuSO4 ( ). [Cu(NH3)4]SO4 . NaOH ( ), Na2S ( ). u()2 CuS [Cu(NH3)4]2+.
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|
1. ? , .
2. . - .
3. - .
4. - .
5. .
6. .
7. . - .
() .
1. . , (, ) - . , .
.
CuSO4+4NH3 = [Cu(NH3)4]SO4 AgNO3+KCN = K[Ag(CN)2]
2. . d- ( . . ).
3. , .
4. , , . , 4 6.
5. , . , , . .
. Fe(CN)3 3KCN
: K3[Fe(CN)6],
Fe3+;
CN-; 6; [Fe(CN)6]3-; +.
6. . . , , +4 [Pt(NH3)4Cl2].
. Pt = +4, NH3 , - -2, : +4 + (-2) = +2.
7. . , , , .
.
[Ag(NH3)2]Cl ↔ [Ag(NH3)2]+ + l-
K[Ag(CN)2] ↔ + + [Ag(CN)2]-
[Ag(NH3)2]+ ↔ Ag+ + 2NH3
[Ag(CN)2] ↔ Ag+ + 2N-
:
[ Ag +] ×[ NH ]2
KH[Ag(NH3)2]+ = 3 = 6,8 ×10-8
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[ Ag +] ×[ CN -]2
{[ Ag (CN) ]-}
= 1,0 ×10-21
[Ag(CN)2] - , [Ag(NH3)2]+.