.
, . ?
12 + Na2SO4 BaSO4↓+ 2NaCl
2+ () + SO42− () BaSO4 ().
BaSO4 () . ⇄ 2+ () + SO4 2− ()
25 BSO4 = [2+] × [SO42−] = 1,3 ×10−10.
[+2] [S42−] , , - [+2] × [S42−] .
, [+2] × [S42−] > BaSO4.
, .
.. [+2] × [S42−] < BaSO4 .
[+2] × [S42−] = BaSO4.
, , .. .
[+2] × [S42−] < BaSO4.
, .
, () 3 . - 32−, :
3 + 2HCl CaCl2 + CO2↑+ H2O
. , .
- , .
, :
AgCl () ⇄ Ag+() + Cl−()
. , , Cl− ( , NaCl). , .
, . AgNO3, .. Ag+.
|
|
. .
, , . 1735Na. NaCl. , 1735− Na+ , . .
, , : , , .
, Cl−, Br−, I−, Ag+ AgI, .. (AgI = 10−16),
(AgCl = 1,8×10−8).