Answer to Question #57636 in General Chemistry for ej

Question

If ionic bonds are broken when a salt dissolves in water and the ions are separated and surrounded by water molecules, how can ions react with each other to form a precipitate?

Answer 1

In the solution, ions are still moving, so are molecules of the solvent. If during this two ions, which can form insoluble compound (which therefore almost doesn`t dissociate), come close enough, dynamic equilibrium would shift towards formation of the precipitate.