Which of the following accurately describes acids and bases in regard to ionization?
a. when free hydrogen ions and free hydroxyl ions are removed from solutions of acids and bases, the acidic and basic properties disappear.
b. weak acids dissociate to a great degree.
c. weak bases dissociate only to a slight degree to produce free hydrogen ions.
d. when an acid and a base are mixed together in the proper proportions, two hydroxyl ions will unite.