Q. The of , AgCl, AgBr and AgI are respectively, , , , . Which one of the following salts will precipitate last if solution is added to the solution containing equal moles of NaCl, NaBr, NaI and ?

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Solution:

As 1 >> s so 1 – s = 1

or
Similarly 's' for AgBr and AgCl is found to be and respectively since solubility of is highest, so it will participate last.

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