Here's the breakdown of why each solvent is likely or unlikely to dissolve Sodium Naphthionate:
* Water (H₂O): Water is a polar solvent, meaning it has a partial positive charge on one end and a partial negative charge on the other. This polarity allows it to effectively dissolve ionic compounds through electrostatic interactions. Sodium Naphthionate is likely to be soluble in water.
* Toluene (C₇H₈): Toluene is a nonpolar solvent. It lacks the ability to form strong interactions with ions. Sodium Naphthionate is unlikely to be soluble in toluene.
* Ligroin: Ligroin is a mixture of nonpolar hydrocarbons (similar to gasoline). Like toluene, it is nonpolar and unlikely to dissolve Sodium Naphthionate.
In summary: Sodium Naphthionate is most likely to dissolve in water, a polar solvent. It will likely be insoluble in nonpolar solvents like toluene and ligroin.