- . .
, . . - - .
, ; ; .
. - .
, , . , .
1. , (I ):
Na2CO3 + HOH ⇄ NaHCO3 + NaOH;
2Na+ + C + HOH ⇄ HCO3- + 2Na+ + OH-;
C + HOH ⇄ HCO3- + OH-.
. , , , . -, > 7.
2. , (I ):
ZnCL2 + HOH ⇄ ZnOHCl + HCl;
Zn2+ + 2Cl- + HOH ⇄ ZnOH+ + 2Cl- + H+;
Zn2+ + HOH ⇄ ZnOH+.
. ,
< 7.
3. , :
CH3COONH4 + HOH ⇄ CH3COOH + NH4OH;
CH3COO- + NH4+ + HOH ⇄ CH3COOH + NH4OH.
, . 7.
(p).
.
. K[H2O] = ., :
, . , , , , . , , .
. .
, : .
, , , , Al2S3, Cr2S3:
Al2S3 + 6HOH = 2Al(OH)3↓ + 3H2S↑.
.