I'm leaning towards the idea that the reactivity would be different, perhaps due to the differing bond strengths in the compounds. Different cations in proximity to the anion would affect the anion's reactivity in ways particular to those species, despite both having been solvated.
If I have two aqueous solutions of two different compounds (with different solubility) that result in equal amounts of the same anion, should the anion in those solutions have the same reactivity or not?
An example:
Solution A
CaF2 (aq)
Solution B
NaF (aq)
The solutions are prepared...