Science Homework Help

in an extraction experiment of an unknown weak acid and neutral compound in an organic solvent (ether), I am

supposed to add 3.0 M NaOH (aq) to make “salt of the acid” which i can separate in an aq layer, and remove from the seperatory funnel. if i accidentally add 3.0 M HCl instead, how can i fix this mistake? i was thinking either i can drain the aq layer and add Na2SO4 to remove all the water from solution, or i add a weak base that will react only with the HCl and not my unknown weak acid.