3 Ni2+ 1-2 2 NH4OH.
2NiSO4 + 2NH4OH ¯(NiOH)2SO4 + (NH4)2SO4
-
3-4 NH4OH. :
¯(NiOH)2SO4 + 12 NH4OH 2[Ni(NH4)6](OH)2 + (NH4)2SO4 + 122
NaOH KOH Ni(OH)2 - :
Ni2+ + 2OH- 
Ni(OH)2¯
: 1-2 1-2 2 NaOH. 2 . 3-4 2 NaOH. . 3-4 2 HCl. :
Ni(OH)2 + 2HCl NiCl2 + H2O
( ) Ni2+ - :
3 - = NOH HON = C CH3
+ Ni2+ + + 2NH3
CH3 - C = NOH HON = C CH3
:
2-3 2-3 NH4OH 2-3 . 2 HCl NH4OH.
:
1. , = 8.
2. Fe2+, Cu2+. , , . Na2HPO4, , Na2HPO4. NH4OH.
2+.
NH4, 2+ CoOHCl .
:
3 2+ 1-2 2 NH4.
CoCl2 + NH4OH ¯CoOHCl + NH4Cl
2 :
3-4 3%- 22, 3-4 NH4OH 3-4 NH4Cl.
() - :
2CoCl2 + 10NH4OH + 2NH4Cl + H2O2 2[Co(NH3)6]Cl3 + 12H2O
() - :
CoOHCl + 5NH4OH + NH4Cl [Co(NH3)6]Cl2 + 6H2O
NaOH KOH 2+ :
CoCl2 + NOH ¯CoOHCl + NCl
:
2-3 2+ 1-2 2 NaOH. 2 . 1-2 2M NaOH .
Cl + NaOH Co(OH)2 + NaCl
()2 .
|
|
|
2 , .
2-3 2+, 1-2 2 NaOH 1-2 3% 22. ()3
2CoCl2 + 4NaOH + H2O2 ¯2Co(OH)3 + 4NaCl
, Co(OH)2 Co(OH)3 .
NH 4 NCS 2+ (NH4)2[Co(NCS)4] :
l2 + 4NH4NCS (NH4)2[Co(NCS)4] + 2NH4Cl
:
2-3 2+ 8 NH4NCS 5-6 , . (NH4)2[Co(NCS)4]
:
1. = 4-5.
2. (NH4)2[Co(NCS)4] , , NH4NCS.
3. , .
4. Fe3+, NaF, Fe3+ .
