2. , ;
3. , ;
4. , .
43. , :
1. CuO + H2 = Cu + H2O;
2. 2Na + H2 = 2NaH;
3. Mg + H2SO4 = MgSO4 + H2;
4.
44. , : ____ F2______ ( ).
45. :
1. KCl, KBr, KI, KF;
2. KI, KBr, KCl, KF;
3. KF, KI, KBr, KCl;
KF, KCl, KBr, KI.
46. , :
1. ;
2. H2SO4 HNO3;
3. ;
.
47. ,
1. ;
2. ;
3. ;
4. .
48. :
1. ;
2. ;
3. ;
.
49.
, (V):
(IV);
2. ;
3. ;
4. .
50. , :
1. Zn + HCl
2.
3.
4.
51. K2O + ZnO ;:
1. 3;
2. 4;
3. 5;
4. 6.
52. SO3 + Al2O3 :
1. 3;
2. 4;
3. 5;
4. 6.
53. :
1. ;
2. ;
;
4. .
54.
1. P2O5;
2. H2SO4 .;
NaOH;
4. CuSO4.
55. (III) , ,
1. CNS- Ag+;
2. OH- Ba2+;
3. CNS- Ba2+;
4. OH- H+.
56. (NH4)2SO4 , ,
1. OH- Ba2+;
2. OH- H+;
3. Cl- Cu2+;
4. CO32- Ba2+.
57. , SO42-:
1. SO3 + Ca(OH)2 = CaSO4 + H2O;
2. CuSO4 + Ni = NiSO4 + Cu;
3. Na2SO4 + BaCl2 = BaSO4 + 2NaCl;
4. 3Na2SO4 + 2Al(OH)3 = Al2(SO4)3 + 6NaOH.
58. : H2S, Cl2, SO2, CO2. , :
1. H2O;
2. HCl;
3. H2SO4;
NaOH.
5.
59. :
1. Cu + H2SO4 (.) ;
2. Fe + H2SO4 (.) ;
3. Cu + HNO3 (.) ;
4. Fe + HNO3 (.) .
60. , :
1. Na2O, Li, CaO, K;
2. Fe2O3, Li, CaO, Na;
3. Al2O3, CO2, Li, Fe2O3;
4. CaO, Na2O, Al2O3, Ca.
61. , :
|
|
1. NaCl, FeCl3, Al2(SO4)3;
2. NH4Cl, CuSO4, MnCl2;
3. KNO3, Na2SO4, Cr(NO3)3;
4. CuSO4, FeCl3, Cr(NO3)3.
62. , (IY):
1. H2O, SO3, NaCl;
2. H2O, O2, CaO;
3. Na2O, SiO2, H3PO4;
4. H2O, CaO, HCl.
63. , :
1. HCl, NaCl, KOH;
2. Fe2O3, KOH;
3. Fe2O3, Cl2;
4. Fe2O3, KOH, Cl2.
64. , :
1. Ca, H2, BaO;
2. Zn, H2O, BaSO4;
3. Al2O3, CO2, Cu;
4. MgO, Na2CO3, Fe.
65. , :
1. Na, Ag, Ba;
K, Ca, Ni;
3. Mg, Al, Pt;
4. Pb, Cr, Cu.
66. , (IV):
1. CaO, P2O5;
2. HCl, CaO;
3. NaCl, CaO;
4. Na2O, NaOH.
67. , :
1. HNO3, CO2;
2. NaCl, CaCO3;
3. CO2, NaOH;
4. O2, Ba(NO3)2.
68. , ( ):
1. CuO, P2O5;
2. BaO, CuO;
3. P2O5, BaO;
4. Fe3O4, P2O5.
69. , :
1. KMnO4, H2SO4, NaCl;
2. NaNO3, Ba(OH)2, Al2O3;
3. HgO, Ba(OH)2, NaNO3;
4. KMnO4, H2O2, KClO3.
70. , :
1. SO2, CO2, H2S, HF;
2. SO2, H2S, H2, HF;
3. KJ, SO3, CO2, N2;
4. SO2, H2S, KJ, N2.
71. .
1. ;
2. ;
3. .
72. , PbS:
1. Pb;
2. PbO;
3. Pb(NO3)2;
4. PbO2.
73. (), () (IV) :
1. NaOH, Ca;
2. Na2S;
3. Na2SO4;
4. NaOH, O2.
74. , (II):
1. Cu(OH)2, O2, N2;
2. CuO, NO2, O2;
3. CuO, NO2;
4. Cu(NO3)2, O2.
75. , , :
1. HNO3;
2. H2SiO3;
3. HBr;
HF.
76. , . , :
1. H2SO4;
2. HCl;
3. AgNO3;
4. AgCl.
77. : H2SO4, HCl, HNO3. , :
1. BaCl2;
2. ;
Zn;
4. AgNO3.
78. , . :
1. Fe, Cu;
2. ;
3. Fe, Al;
Cu.
79.
;
2. ;
3. .
80. :
o ) ;
o ) ;
|
|
o )
o ) ;
o ) ;
, , ;
7. , , , , ;
8. , ;
9. , , , .
1.
.
,
1. CO2;