Acidity Edit
The hydrogen in the Centre Group carboxyl (-COOH) in carboxylic acids such as acetic acid Can Separate from the molecule by ionization:.
CH 3 CO 2 H → CH 3 CO 2 - + H +.
Because of this release of the Proton (H + ), acetic acid has acidic Character. Acetic acid is a weak acid Monoprotic . In aqueous Solution, has a pK a Value of 4.76. [ 18 ] Its conjugate Base is acetate (CH 3 COO - ). A 1.0 M Solution (About the concentration of domestic vinegar) has a pH of 2.4, Indicating that merely 0.4% of the acetic acid molecules are dissociated. [ 19 ].
Deprotonation equilibrium of acetic acid in water.