, , (.18). 1 250 . , , . 3 .
. 2. :
1 ; 2
: 50 NiSO4 7H2O, 40 Na2SO4 10H2O, 5 H3BO3 250 . .
0,005-0,01 /2. 15-20 . ϳ , , . , .
________________
________
" "
1. ? ?
2. , ?
3. ?
4. ?
5. 㳿 ?
6. ?
7. Fe2+, Ag+, Bi3+ Pb2+ . , - ? , .
8. (V) 10 5 1,517 . .
9. : ) , ) , ) , , 6 30 .
10. () 2 8 . ?
11. , 1 1717 .
12. () 4,48 (..). , .
13-30. :
AgNO3, BaCl2 | l, Cu(NO3)2 | ||
Cr(NO3)2, Na2S | NaNO3, CuI2 | ||
CuI2, NaNO3 | ʲ, Ni(NO3)2 | ||
Na2SO4, CuCl2 | SnCl2, Fe2(SO4)3 | ||
Hg(NO3)2, l2 | Mgl2, Mn(NO3)2 | ||
Ni(NO3)2, SnCl2 | CrCl3, CaSO4 | ||
K2SO4, AuCl3 | 2S, SnSO4 | ||
Na3PO4, rl3 | LiNO3, CuI2 | ||
KBr, CuSO4 | SnBr2, K3PO4 |
31-37. , t m ? .
|
|
ѳ | m, | t | |
AgNO3 | 2,00 | 15 . 38 . | |
CuSO4 | 4,30 | 13 . 57 . | |
Fe2(SO4)3 | 2,50 | 20 . 46 . | |
SnBr2 | 1,50 | 30 . 18 . | |
Hg(NO3)2 | 2,50 | 24 . 13 . | |
AuCl3 | 2,50 | 12 . 43 . | |
CuCl2 | 2,50 | 10 . 16 . |
38. : ) , ) .
39. Sn2+, Au+, Zn2+ Ni2+ . , - ? , .
40. , MgSO4. , , 193000 ∙.
7