Your choice (p-chloroaniline) is

(I changed my mind and I WANT to separate the benzoic acid first!)

Let's begin with the separation of p-chloroaniline.

If you want to make only p-chloroaniline* water soluble, which aqueous solution will you add?

dilute aqueous HCl
dilute aqueous NaOH
saturated aqueous NaHCO3

Click ADD to add the selected solution to the separatory funnel