:
: , -. , .
-, , , ( 4.5). -, .
4.5. .
NaOH ( ) | Mg(OH)2 |
KOH ( ) | Fe(OH)2 (II) |
LiOH | Zn(OH)2 |
Ba(OH)2 | NH4OH |
Ca(OH)2 ( ) | Fe(OH)3 (III) |
.. ( ) |
. , , . () , .
. . , .
2 NH4OH | + | H2S | = | (NH4)2S | + | 2 H2O |
( ) | ||||||
2 NaOH | + | H2S | = | Na2S | + | 2 H2O |
.
Cu(OH)2 = CuO + H2O ( )
2 Fe(OH)3 = Fe2O3 + 3 H2O ( )
: , . ( ) .
.
Zn(OH)2 . , - Zn(OH)2 :
ZnCl2 + 2 NaOH = Zn(OH)2 + 2 NaCl
, - :
Zn(OH)2 + H2SO4 = ZnSO4 + 2 H2O
, , . Zn(OH)2 ?
, , :
Zn(OH)2 | + | 2 NaOH | = | Na2ZnO2 | + | 2 H2O |
H2ZnO2 | + | 2 NaOH | = | Na2ZnO2 | + | 2 H2O |
, NaOH . ( H2ZnO2) Zn(OH)2 ! ( ) :
|
|
Zn(OH)2 H2ZnO2 ;
HOZnOH .
͖ OZn , , :
H2SO4 | 2 NaOH | |||
2 H2O + ZnSO4 | = | Zn(OH)2 = H2ZnO2 | = | Na2ZnO2 + 2 H2O |
.