| , 3 | V . = |
| , 3 | V = |
| , 3 | V (NaOH) = |
| , /3 | (NaOH) = |
| NaOH/u2+, /3 | (NaOH/u2+) = |
| , | m (Cu2+) = |
| , % | = |
18
(II) (II)
1. : , ; (II) (II) .
[ZnCl3]. . Cl- , [ZnCl3], , . :
R-Cl + [ZnCl3] Û R [ZnCl3] + Cl
, :
[ZnCl3] + 4H2O Û [Zn(H2O)4]2+ + 3Cl
.
1) , , ; 2) : 25 3 10 3, 100 250 3, 10 20 3, 100 25 3, 250 3, ; 3) : NaOH c (NaOH) = 2 /3; l c (HCl) = 6 /3; w(NH4OH) = 10 % w(NH4OH) = 25 %; K4[Fe(CN)6] w(K4[Fe(CN)6]) = 10 %; NiSO4 (NiSO4) = 0,25 /3 ( ); ZnSO4 × 7H2O c (ZnSO4 × 7H2O) = = 0,25 /3 ( ); [(1/2) Na2H2Y] = 0,05 /3, - , ( ) 1,2 %, , -17 Cl-, (), .
30 3 10 3, 50 3 (l) = 2 /3.
10 3 50 3 10 3 l (l) = 6 /3. , Ni2+ , 1 2 . 2-3 2 l, .
|
|
|
, , 250 3. ( 10-15 3) 100 3 2 l. . , 2-3 . .
- . . 25 3 , ( HCl), . 0,05 . , , . 27.
250 3 . 250 3. 4[Fe(CN)6]. Zn2[Fe(CN)6]. .
. 25 3 , 25 3 - , () 0,05 - . . . 27.
6.
, :
,
,
[(1/2) Na2H2Y] , /3; V (Na2H2Y) , , 3; [(1/2) Ni] , /; M [(1/2) Zn] , /; V . , 3; V , 3. . 26 27.
26
| , /3 | c [(1/2) Na2H2Y] = | |
| , 3 | V . = | |
| , 3. | V = | |
| , , 3 | V (Na2H2Y) = | |
| , / | [(1/2) Ni] = | |
| , | m (Ni) = | |
| , % | = |
|
|
|
27
| , /3 | c [(1/2) Na2H2Y] | |
| , 3 | V . = | |
| , 3. | V = | |
| , , 3 | V (Na2H2Y) = | |
| , / | [(1/2)Zn] = | |
| , | m (Zn) = | |
| , % | = |
1. ?
2. ?
3. ?
4. ? ?
5. ?
6. , 18.
7. .
8. - ( 17)?
9. , ?
