What about dissociation degree with acetic acid? This is related to temperature and environmental conditions.

At a certain temperature, the dissociation degree of acetic acid changes with the change of concentration, and the dissociation degree decreases with the increase of concentration. When the concentration decreases, the dissociation degree increases. The dissociation constant is constant.

At 25℃, the dissociation constant k = 1.75 * 10-5.