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On adding 0.1M solution each of Ag+, Ba2+, Ca2+ ions in a Na2SO4 solution, the species first precipitated is (Ks(CaSO4) = 10-6, Ks(BaSO4) = 10-11, Ks(Ag2SO4) = 10-5:

(a) Ag2SO4
(b) BaSO4
(c) CaSO4
(d) All of these

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Best answer

Correct option is (b) BaSO4

The minimum [SO42-] concentration required for precipitation in for BaSO4.

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