If I dissolve Lithium Hexafluorophosphate (LiPF6) in water what concentration of lithium ions will I get?

Question

Generally, I'm wanting to know a technique for determining what solutes will dissolve Lithium Hexafluorophosphate and for each how many free ions will be floating around able to take part in other reactions.

Answer 1

Lithium Hexafluorophosphate = LiPF6

This substance is soluble in water and dissociates to form lithium ions and the PF6- ion.

Li+ does not hydrolyze since lithium is cation of a strong base.

PF6- does not hydrolyze either since there are no molecules of HPF6.

Since neither ion reacts with water to any extent, both ions are free to interact with other ions, although Li+ doesn't form many insoluble compounds.