3. , .
4. ?
5. : .
6. ?
7. , ?
1. I(SO4)2×12H2O, , .
:
Al()3 Al(OH)3 Al2O3.
KAl(SO4)2×12H2O , ;
NH3×H2O(NH4OH)- , ;
Al(OH)3 ;
Al2O3 - ;
Al .
1. , :
Al3+ + 3-Al(OH)3
t
2 Al(OH)3Al2O3 + 32,
| 6NH4OH |
| t |
KAl(SO4)2×12H2O 2Al(OH)3 Al2O3
2. Al2O3 , (1), m() = 0,1 .
M(Kl(SO4)2×12H2O)=474 /,
(Al2O3)=102 /,
=2, b=1.
3. (2). NH3×H2O (NH4OH). : w(NH4OH)=25%;
: 0,1 ; 1,3 3
1
1. .
2. ..0,5,0,7?
2
.
2. BaCl2∙2H2O0.4526.2?
3
1. , .
2. BaCl2∙2H2O,BaCl2∙2H2O0,4872.0,4644.
4
1. ..,().
2. 1-,2,5%?.
5
1..??
2. 0,7178...250..
|
|
|
6
1. ().
2. 1,50,48Fe2O3.?
7
1. .
2. 2,51,48Fe2O3.?
8
1. ..
2. 0,81050,5008Al2O3..
9
1. ?
2. FeSO4∙7H2O Fe2O3( 0,2).
10
1. ..()?
2. FeSO4∙7H2O Fe2O3( 0,2).
11
1. .??
2. 0,5850.0,5642.?.
12
1. .??.
2. 0,5168...250..
13
1. ..
2. BaCl2∙2H2O0.5241.1,5?
14
1. .-.()??
2. BaCl2∙2H2O,BaCl2∙2H2O0,7878.0,5654.
15
1. , .
2. 0,8-,2,4,10%?
16
1. ?
2. 0,150,55?
17
1. ?
2. 0,3850.0,2642.?.
18
1. ,. ()?
2. 3,5,,3,12..
|
|
|
19
1. .
2. MgNH4PO4×6H2O. , , . .
20
1. ..?.
2. :3,52456,4,74115,4,30355.
21
1. : .
2. 0,50,5?
22
1. ?
2. 0,8500.0,5640.?.
23
1. ?
2. 0,1680...150..
24
1. , .
2. 5,5,,2,12..
25
1. ?
2. BaCl2∙2H2O,BaCl2∙2H2O0,6880.0,6655.
26
1. w,% ?
2. 0,51050,1008Al2O3..
27
1. ?
2. 5,50,58Fe2O3.?
28
1. , ?
2. 0,1,0,5?
29
1. ..
2. 13,5,,3,12..
30
