NaC2H3O2:Sodium acetate is a salt formed by the reaction of acetic acid (HC2H3O2) with sodium hydroxide (NaOH). It is commonly used as a food preservative.
HCl:Hydrochloric acid is a strong acid commonly found in our stomachs. It can be dangerous if not handled properly.
Kₐ:Acid dissociation constant, also known as the acidity constant. It represents the extent to which an acid donates its protons in solution.