* Sodium Hydroxide (NaOH): This is a strong base. It completely dissociates in water, releasing a high concentration of hydroxide ions (OH-).

* Acetic Acid (CH₃COOH): This is a weak acid. It only partially dissociates in water, releasing a low concentration of hydrogen ions (H+).

* Bicarbonate (HCO₃⁻): This is a weak base. It reacts with water to form a small amount of hydroxide ions (OH-).

* Hydrochloric Acid (HCl): This is a strong acid. It completely dissociates in water, releasing a high concentration of hydrogen ions (H+).

Key Point: Weak bases do not completely dissociate in water, resulting in a lower concentration of hydroxide ions compared to strong bases.