1. 110-10. 5 .
, BaSO4 ⇄ Ba2+ + SO ,
[BaSO4] = [Ba2+] = [SO ].
(BaSO4) = [Ba2+] [SO ] = 110-10, , (BaSO4) = [BaSO4]2, [BaSO4] = = = 10-5 /.
(ν) 5 : ν = 510-5 .
(m), ν BaSO4:
m = ν M (BaSO4) = 510-5 233 = 1,16510-2 = 11,65 .
2. AgI 250 1,2210-8 /. AgI.
AgI ⇄ Ag+ + I-
[Ag+] = [I-] = [AgI] = 1,2210-8 /.
(AgI) = [Ag+] [I-] = (1,2210-8)2 = 1,510-16.
, , . : , , , .
3. 0,02 . ? (CaSO4) = 1,310-4.
- , - : [Ca2+]1 = [CaCl2] = 0,02 / [SO ]1 = [Na2SO4] = 0,02 /.
. [Ca2+]2 [SO ]2 : [Ca2+]2 = 0,50,02 = 10-2 /,
[SO ]2 = 0,50,02 = 10-2 /.
[Ca2+][SO ] = 10-210-2 = 10-4, : (CaSO4) = 1,310-4. , .