Which solvents water toluene or ligroin will dissolve Sodium Naphthionate?
Furthermore, toluene and ligroin (a synonym for a fraction of petroleum ether) are both non-polar solvents that generally do not solvate ionic compounds. Water, on the other hand, has a large dipole moment and therefore is much more able to form strong intermolecular interactions with sodium and naphthionate ions in solution.