Your choice (2-naphthol) is

Let's separate the 2-naphthol.

You want to extract 2-naphthol* into the aqueous solution by changing it to a water-soluble salt*.

Which aqueous solution will you add?

dilute aqueous HCl (a strong inorganic acid)
dilute aqueous NaOH (a strong inorganic base)
saturated aqueous NaHCO3 (a weak inorganic base)

Click ADD to add the selected solution to the separatory funnel