When an acid comes in contact with a base, they react to neutralize the acid and base properties, producing a salt. The H(+) cation of the acid combines with the OH(-) anion of the base to form water. The compound formed by the cation of the base and the anion of the acid is called a salt. The combination of hydrochloric acid and sodium hydroxide produces common table salt, NaCl: HCI (acid) + NaOH (base)= H20 (water) + NaCl (salt). The word salt is a general term which applies to the products of all such acid-base reactions.