Benzoic Acid Naoh Hcl . An acid is a substance which furnishes hydrogen ions (h +) when dissolved in water. Group i metal hydroxides (lioh, naoh, etc.) group ii metal hydroxides (mg(oh)2, ba(oh)2, etc.) strong bases completely dissociate in aq solution (kb > 1, pkb < 1). The Extraction of Benzoic Acid from a Mixture from www.pitt.edu The titration calculations for naoh: Hcl yields a c 8 h 8 o 2 crystalline acid. Conjugate acids (cations) of strong bases are ineffective bases.