Question

A solution contains 0.1 M Sr2+ ions and 0.1 M Ag+
ions.
Addition of an equal volume of a 0.5 M solution of which
reagent will cause precipitation of a strontium salt but not
a silver salt?

Answer 1

Let us first go through the question in order to critically analyze it. A solution contains 0.1 M Sr2+ ions and 0.1 M Ag+ ions and then on addition of an equal volume of a 0.5 M solution of which  reagent will cause precipitation of a strontium salt but not  a silver salt.

This question just about the solubility of slightly soluble salts.

Remember that addition of common ion normally causes the precipitation of a slightly soluble salt.

So in order determine the reagent that is likely to cause the precipitation of strontium ions but not silver ions, the reagent must be a solution containing strontium ions in order to cause common ion effect.

Answer 2

Release us first through the inquiry so as to fundamentally break down it. An answer contains 0.1 M Sr2+ particles and 0.1 M Ag+  

particles and after that on expansion of an equivalent volume of a 0.5 M arrangement of which  reagent will cause precipitation of a strontium salt yet not  a silver salt.  

This inquiry pretty much the dissolvability of marginally solvent salts.  

Keep in mind that expansion of regular particle typically causes the precipitation of a marginally dissolvable salt.  

So all together decide the reagent that is probably going to cause the precipitation of strontium particles however not silver particles, the reagent must be an answer containing strontium particles so as to cause normal particle impact.