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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. , .





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